creation_sourcecode: {{
    "language": "Solidity",
    "sources": {
      "contracts/HashWar.sol": {
        "content": "// SPDX-License-Identifier: GPL-3.0\n\n// File: contracts/tokenrun/ERC721x/IERC721x.sol\n\npragma solidity ^0.8.14;\n\ninterface IERC721x {\n    /**\n     * @dev Returns if the token is locked (non-transferrable) or not.\n     */\n    function isUnlocked(uint256 _id) external view returns (bool);\n\n    /**\n     * @dev Returns the amount of locks on the token.\n     */\n    function lockCount(uint256 _tokenId) external view returns (uint256);\n\n    /**\n     * @dev Returns if a contract is allowed to lock/unlock tokens.\n     */\n    function approvedContract(address _contract) external view returns (bool);\n\n    /**\n     * @dev Returns the contract that locked a token at a specific index in the mapping.\n     */\n    function lockMap(uint256 _tokenId, uint256 _index)\n    external\n    view\n    returns (address);\n\n    /**\n     * @dev Returns the mapping index of a contract that locked a token.\n     */\n    function lockMapIndex(uint256 _tokenId, address _contract)\n    external\n    view\n    returns (uint256);\n\n    /**\n     * @dev Locks a token, preventing it from being transferrable\n     */\n    function lockId(uint256 _id) external;\n\n    /**\n     * @dev Unlocks a token.\n     */\n    function unlockId(uint256 _id) external;\n\n    /**\n     * @dev Unlocks a token from a given contract if the contract is no longer approved.\n     */\n    function freeId(uint256 _id, address _contract) external;\n}\n// File: @openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol\n\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary AddressUpgradeable {\n    /**\n     * @dev Returns true if `account` is a contract.\n     *\n     * [IMPORTANT]\n     * ====\n     * It is unsafe to assume that an address for which this function returns\n     * false is an externally-owned account (EOA) and not a contract.\n     *\n     * Among others, `isContract` will return false for the following\n     * types of addresses:\n     *\n     *  - an externally-owned account\n     *  - a contract in construction\n     *  - an address where a contract will be created\n     *  - an address where a contract lived, but was destroyed\n     *\n     * Furthermore, `isContract` will also return true if the target contract within\n     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,\n     * which only has an effect at the end of a transaction.\n     * ====\n     *\n     * [IMPORTANT]\n     * ====\n     * You shouldn't rely on `isContract` to protect against flash loan attacks!\n     *\n     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n     * constructor.\n     * ====\n     */\n    function isContract(address account) internal view returns (bool) {\n        // This method relies on extcodesize/address.code.length, which returns 0\n        // for contracts in construction, since the code is only stored at the end\n        // of the constructor execution.\n\n        return account.code.length > 0;\n    }\n\n    /**\n     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n     * `recipient`, forwarding all available gas and reverting on errors.\n     *\n     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n     * of certain opcodes, possibly making contracts go over the 2300 gas limit\n     * imposed by `transfer`, making them unable to receive funds via\n     * `transfer`. {sendValue} removes this limitation.\n     *\n     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n     *\n     * IMPORTANT: because control is transferred to `recipient`, care must be\n     * taken to not create reentrancy vulnerabilities. Consider using\n     * {ReentrancyGuard} or the\n     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n     */\n    function sendValue(address payable recipient, uint256 amount) internal {\n        require(\n            address(this).balance >= amount,\n            \"Address: insufficient balance\"\n        );\n\n        (bool success, ) = recipient.call{value: amount}(\"\");\n        require(\n            success,\n            \"Address: unable to send value, recipient may have reverted\"\n        );\n    }\n\n    /**\n     * @dev Performs a Solidity function call using a low level `call`. A\n     * plain `call` is an unsafe replacement for a function call: use this\n     * function instead.\n     *\n     * If `target` reverts with a revert reason, it is bubbled up by this\n     * function (like regular Solidity function calls).\n     *\n     * Returns the raw returned data. To convert to the expected return value,\n     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n     *\n     * Requirements:\n     *\n     * - `target` must be a contract.\n     * - calling `target` with `data` must not revert.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(address target, bytes memory data)\n    internal\n    returns (bytes memory)\n    {\n        return\n        functionCallWithValue(\n            target,\n            data,\n            0,\n            \"Address: low-level call failed\"\n        );\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n     * `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, 0, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but also transferring `value` wei to `target`.\n     *\n     * Requirements:\n     *\n     * - the calling contract must have an ETH balance of at least `value`.\n     * - the called Solidity function must be `payable`.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value\n    ) internal returns (bytes memory) {\n        return\n        functionCallWithValue(\n            target,\n            data,\n            value,\n            \"Address: low-level call with value failed\"\n        );\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n     * with `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        require(\n            address(this).balance >= value,\n            \"Address: insufficient balance for call\"\n        );\n        (bool success, bytes memory returndata) = target.call{value: value}(\n            data\n        );\n        return\n        verifyCallResultFromTarget(\n            target,\n            success,\n            returndata,\n            errorMessage\n        );\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(address target, bytes memory data)\n    internal\n    view\n    returns (bytes memory)\n    {\n        return\n        functionStaticCall(\n            target,\n            data,\n            \"Address: low-level static call failed\"\n        );\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal view returns (bytes memory) {\n        (bool success, bytes memory returndata) = target.staticcall(data);\n        return\n        verifyCallResultFromTarget(\n            target,\n            success,\n            returndata,\n            errorMessage\n        );\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(address target, bytes memory data)\n    internal\n    returns (bytes memory)\n    {\n        return\n        functionDelegateCall(\n            target,\n            data,\n            \"Address: low-level delegate call failed\"\n        );\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        (bool success, bytes memory returndata) = target.delegatecall(data);\n        return\n        verifyCallResultFromTarget(\n            target,\n            success,\n            returndata,\n            errorMessage\n        );\n    }\n\n    /**\n     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling\n     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.\n     *\n     * _Available since v4.8._\n     */\n    function verifyCallResultFromTarget(\n        address target,\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) internal view returns (bytes memory) {\n        if (success) {\n            if (returndata.length == 0) {\n                // only check isContract if the call was successful and the return data is empty\n                // otherwise we already know that it was a contract\n                require(isContract(target), \"Address: call to non-contract\");\n            }\n            return returndata;\n        } else {\n            _revert(returndata, errorMessage);\n        }\n    }\n\n    /**\n     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the\n     * revert reason or using the provided one.\n     *\n     * _Available since v4.3._\n     */\n    function verifyCallResult(\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) internal pure returns (bytes memory) {\n        if (success) {\n            return returndata;\n        } else {\n            _revert(returndata, errorMessage);\n        }\n    }\n\n    function _revert(bytes memory returndata, string memory errorMessage)\n    private\n    pure\n    {\n        // Look for revert reason and bubble it up if present\n        if (returndata.length > 0) {\n            // The easiest way to bubble the revert reason is using memory via assembly\n            /// @solidity memory-safe-assembly\n            assembly {\n                let returndata_size := mload(returndata)\n                revert(add(32, returndata), returndata_size)\n            }\n        } else {\n            revert(errorMessage);\n        }\n    }\n}\n\n// File: @openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol\n\n// OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/Initializable.sol)\n\npragma solidity ^0.8.2;\n\n/**\n * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed\n * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an\n * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer\n * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.\n *\n * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be\n * reused. This mechanism prevents re-execution of each \"step\" but allows the creation of new initialization steps in\n * case an upgrade adds a module that needs to be initialized.\n *\n * For example:\n *\n * [.hljs-theme-light.nopadding]\n * ```solidity\n * contract MyToken is ERC20Upgradeable {\n *     function initialize() initializer public {\n *         __ERC20_init(\"MyToken\", \"MTK\");\n *     }\n * }\n *\n * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {\n *     function initializeV2() reinitializer(2) public {\n *         __ERC20Permit_init(\"MyToken\");\n *     }\n * }\n * ```\n *\n * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as\n * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.\n *\n * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure\n * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.\n *\n * [CAUTION]\n * ====\n * Avoid leaving a contract uninitialized.\n *\n * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation\n * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke\n * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:\n *\n * [.hljs-theme-light.nopadding]\n * ```\n * /// @custom:oz-upgrades-unsafe-allow constructor\n * constructor() {\n *     _disableInitializers();\n * }\n * ```\n * ====\n */\nabstract contract Initializable {\n    /**\n     * @dev Indicates that the contract has been initialized.\n     * @custom:oz-retyped-from bool\n     */\n    uint8 private _initialized;\n\n    /**\n     * @dev Indicates that the contract is in the process of being initialized.\n     */\n    bool private _initializing;\n\n    /**\n     * @dev Triggered when the contract has been initialized or reinitialized.\n     */\n    event Initialized(uint8 version);\n\n    /**\n     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,\n     * `onlyInitializing` functions can be used to initialize parent contracts.\n     *\n     * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a\n     * constructor.\n     *\n     * Emits an {Initialized} event.\n     */\n    modifier initializer() {\n        bool isTopLevelCall = !_initializing;\n        require(\n            (isTopLevelCall && _initialized < 1) ||\n            (!AddressUpgradeable.isContract(address(this)) &&\n            _initialized == 1),\n            \"Initializable: contract is already initialized\"\n        );\n        _initialized = 1;\n        if (isTopLevelCall) {\n            _initializing = true;\n        }\n        _;\n        if (isTopLevelCall) {\n            _initializing = false;\n            emit Initialized(1);\n        }\n    }\n\n    /**\n     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the\n     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be\n     * used to initialize parent contracts.\n     *\n     * A reinitializer may be used after the original initialization step. This is essential to configure modules that\n     * are added through upgrades and that require initialization.\n     *\n     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`\n     * cannot be nested. If one is invoked in the context of another, execution will revert.\n     *\n     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in\n     * a contract, executing them in the right order is up to the developer or operator.\n     *\n     * WARNING: setting the version to 255 will prevent any future reinitialization.\n     *\n     * Emits an {Initialized} event.\n     */\n    modifier reinitializer(uint8 version) {\n        require(\n            !_initializing && _initialized < version,\n            \"Initializable: contract is already initialized\"\n        );\n        _initialized = version;\n        _initializing = true;\n        _;\n        _initializing = false;\n        emit Initialized(version);\n    }\n\n    /**\n     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the\n     * {initializer} and {reinitializer} modifiers, directly or indirectly.\n     */\n    modifier onlyInitializing() {\n        require(_initializing, \"Initializable: contract is not initializing\");\n        _;\n    }\n\n    /**\n     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.\n     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized\n     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called\n     * through proxies.\n     *\n     * Emits an {Initialized} event the first time it is successfully executed.\n     */\n    function _disableInitializers() internal virtual {\n        require(!_initializing, \"Initializable: contract is initializing\");\n        if (_initialized != type(uint8).max) {\n            _initialized = type(uint8).max;\n            emit Initialized(type(uint8).max);\n        }\n    }\n\n    /**\n     * @dev Returns the highest version that has been initialized. See {reinitializer}.\n     */\n    function _getInitializedVersion() internal view returns (uint8) {\n        return _initialized;\n    }\n\n    /**\n     * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.\n     */\n    function _isInitializing() internal view returns (bool) {\n        return _initializing;\n    }\n}\n\n// File: @openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol\n\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract ContextUpgradeable is Initializable {\n    function __Context_init() internal onlyInitializing {}\n\n    function __Context_init_unchained() internal onlyInitializing {}\n\n    function _msgSender() internal view virtual returns (address) {\n        return msg.sender;\n    }\n\n    function _msgData() internal view virtual returns (bytes calldata) {\n        return msg.data;\n    }\n\n    /**\n     * @dev This empty reserved space is put in place to allow future versions to add new\n     * variables without shifting down storage in the inheritance chain.\n     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n     */\n    uint256[50] private __gap;\n}\n\n// File: @openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol\n\n// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\nabstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {\n    address private _owner;\n\n    event OwnershipTransferred(\n        address indexed previousOwner,\n        address indexed newOwner\n    );\n\n    /**\n     * @dev Initializes the contract setting the deployer as the initial owner.\n     */\n    function __Ownable_init() internal onlyInitializing {\n        __Ownable_init_unchained();\n    }\n\n    function __Ownable_init_unchained() internal onlyInitializing {\n        _transferOwnership(_msgSender());\n    }\n\n    /**\n     * @dev Throws if called by any account other than the owner.\n     */\n    modifier onlyOwner() {\n        _checkOwner();\n        _;\n    }\n\n    /**\n     * @dev Returns the address of the current owner.\n     */\n    function owner() public view virtual returns (address) {\n        return _owner;\n    }\n\n    /**\n     * @dev Throws if the sender is not the owner.\n     */\n    function _checkOwner() internal view virtual {\n        require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n    }\n\n    /**\n     * @dev Leaves the contract without owner. It will not be possible to call\n     * `onlyOwner` functions. Can only be called by the current owner.\n     *\n     * NOTE: Renouncing ownership will leave the contract without an owner,\n     * thereby disabling any functionality that is only available to the owner.\n     */\n    function renounceOwnership() public virtual onlyOwner {\n        _transferOwnership(address(0));\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Can only be called by the current owner.\n     */\n    function transferOwnership(address newOwner) public virtual onlyOwner {\n        require(\n            newOwner != address(0),\n            \"Ownable: new owner is the zero address\"\n        );\n        _transferOwnership(newOwner);\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Internal function without access restriction.\n     */\n    function _transferOwnership(address newOwner) internal virtual {\n        address oldOwner = _owner;\n        _owner = newOwner;\n        emit OwnershipTransferred(oldOwner, newOwner);\n    }\n\n    /**\n     * @dev This empty reserved space is put in place to allow future versions to add new\n     * variables without shifting down storage in the inheritance chain.\n     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n     */\n    uint256[49] private __gap;\n}\n\n// File: contracts/tokenrun/ERC721x/LockRegistry.sol\n\npragma solidity ^0.8.14;\n\nabstract contract LockRegistry is OwnableUpgradeable, IERC721x {\n    mapping(address => bool) public override approvedContract;\n    mapping(uint256 => uint256) public override lockCount;\n    mapping(uint256 => mapping(uint256 => address)) public override lockMap;\n    mapping(uint256 => mapping(address => uint256))\n    public\n    override lockMapIndex;\n\n    event TokenLocked(\n        uint256 indexed tokenId,\n        address indexed approvedContract\n    );\n    event TokenUnlocked(\n        uint256 indexed tokenId,\n        address indexed approvedContract\n    );\n\n    function __LockRegistry_init() internal onlyInitializing {\n        OwnableUpgradeable.__Ownable_init();\n    }\n\n    function isUnlocked(uint256 _id) public view override returns (bool) {\n        return lockCount[_id] == 0;\n    }\n\n    function updateApprovedContracts(\n        address[] calldata _contracts,\n        bool[] calldata _values\n    ) external onlyOwner {\n        require(_contracts.length == _values.length, \"!length\");\n        for (uint256 i = 0; i < _contracts.length; i++)\n            approvedContract[_contracts[i]] = _values[i];\n    }\n\n    function _lockId(uint256 _id) internal {\n        require(approvedContract[msg.sender], \"Cannot update map\");\n        require(\n            lockMapIndex[_id][msg.sender] == 0,\n            \"ID already locked by caller\"\n        );\n\n        uint256 count = lockCount[_id] + 1;\n        lockMap[_id][count] = msg.sender;\n        lockMapIndex[_id][msg.sender] = count;\n        lockCount[_id]++;\n        emit TokenLocked(_id, msg.sender);\n    }\n\n    function _unlockId(uint256 _id) internal {\n        require(approvedContract[msg.sender], \"Cannot update map\");\n        uint256 index = lockMapIndex[_id][msg.sender];\n        require(index != 0, \"ID not locked by caller\");\n\n        uint256 last = lockCount[_id];\n        if (index != last) {\n            address lastContract = lockMap[_id][last];\n            lockMap[_id][index] = lastContract;\n            lockMap[_id][last] = address(0);\n            lockMapIndex[_id][lastContract] = index;\n        } else lockMap[_id][index] = address(0);\n        lockMapIndex[_id][msg.sender] = 0;\n        lockCount[_id]--;\n        emit TokenUnlocked(_id, msg.sender);\n    }\n\n    function _freeId(uint256 _id, address _contract) internal {\n        require(!approvedContract[_contract], \"Cannot update map\");\n        uint256 index = lockMapIndex[_id][_contract];\n        require(index != 0, \"ID not locked\");\n\n        uint256 last = lockCount[_id];\n        if (index != last) {\n            address lastContract = lockMap[_id][last];\n            lockMap[_id][index] = lastContract;\n            lockMap[_id][last] = address(0);\n            lockMapIndex[_id][lastContract] = index;\n        } else lockMap[_id][index] = address(0);\n        lockMapIndex[_id][_contract] = 0;\n        lockCount[_id]--;\n        emit TokenUnlocked(_id, _contract);\n    }\n}\n// File: erc721a-upgradeable/contracts/ERC721A__InitializableStorage.sol\n\npragma solidity ^0.8.0;\n\n/**\n * @dev This is a base storage for the  initialization function for upgradeable diamond facet contracts\n **/\n\nlibrary ERC721A__InitializableStorage {\n    struct Layout {\n        /*\n         * Indicates that the contract has been initialized.\n         */\n        bool _initialized;\n        /*\n         * Indicates that the contract is in the process of being initialized.\n         */\n        bool _initializing;\n    }\n\n    bytes32 internal constant STORAGE_SLOT =\n    keccak256(\"ERC721A.contracts.storage.initializable.facet\");\n\n    function layout() internal pure returns (Layout storage l) {\n        bytes32 slot = STORAGE_SLOT;\n        assembly {\n            l.slot := slot\n        }\n    }\n}\n\n// File: erc721a-upgradeable/contracts/ERC721A__Initializable.sol\n\npragma solidity ^0.8.0;\n\n/**\n * @dev This is a base contract to aid in writing upgradeable diamond facet contracts, or any kind of contract that will be deployed\n * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an\n * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer\n * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.\n *\n * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as\n * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.\n *\n * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure\n * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.\n */\n\nabstract contract ERC721A__Initializable {\n    using ERC721A__InitializableStorage for ERC721A__InitializableStorage.Layout;\n\n    /**\n     * @dev Modifier to protect an initializer function from being invoked twice.\n     */\n    modifier initializerERC721A() {\n        // If the contract is initializing we ignore whether _initialized is set in order to support multiple\n        // inheritance patterns, but we only do this in the context of a constructor, because in other contexts the\n        // contract may have been reentered.\n        require(\n            ERC721A__InitializableStorage.layout()._initializing\n            ? _isConstructor()\n            : !ERC721A__InitializableStorage.layout()._initialized,\n            \"ERC721A__Initializable: contract is already initialized\"\n        );\n\n        bool isTopLevelCall = !ERC721A__InitializableStorage\n        .layout()\n        ._initializing;\n        if (isTopLevelCall) {\n            ERC721A__InitializableStorage.layout()._initializing = true;\n            ERC721A__InitializableStorage.layout()._initialized = true;\n        }\n\n        _;\n\n        if (isTopLevelCall) {\n            ERC721A__InitializableStorage.layout()._initializing = false;\n        }\n    }\n\n    /**\n     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the\n     * {initializer} modifier, directly or indirectly.\n     */\n    modifier onlyInitializingERC721A() {\n        require(\n            ERC721A__InitializableStorage.layout()._initializing,\n            \"ERC721A__Initializable: contract is not initializing\"\n        );\n        _;\n    }\n\n    /// @dev Returns true if and only if the function is running in the constructor\n    function _isConstructor() private view returns (bool) {\n        // extcodesize checks the size of the code stored in an address, and\n        // address returns the current address. Since the code is still not\n        // deployed when running a constructor, any checks on its code size will\n        // yield zero, making it an effective way to detect if a contract is\n        // under construction or not.\n        address self = address(this);\n        uint256 cs;\n        assembly {\n            cs := extcodesize(self)\n        }\n        return cs == 0;\n    }\n}\n\n// File: erc721a-upgradeable/contracts/ERC721AStorage.sol\n\npragma solidity ^0.8.0;\n\nlibrary ERC721AStorage {\n    // Bypass for a `--via-ir` bug (https://github.com/chiru-labs/ERC721A/pull/364).\n    struct TokenApprovalRef {\n        address value;\n    }\n\n    struct Layout {\n        // =============================================================\n        //                            STORAGE\n        // =============================================================\n\n        // The next token ID to be minted.\n        uint256 _currentIndex;\n        // The number of tokens burned.\n        uint256 _burnCounter;\n        // Token name\n        string _name;\n        // Token symbol\n        string _symbol;\n        // Mapping from token ID to ownership details\n        // An empty struct value does not necessarily mean the token is unowned.\n        // See {_packedOwnershipOf} implementation for details.\n        //\n        // Bits Layout:\n        // - [0..159]   `addr`\n        // - [160..223] `startTimestamp`\n        // - [224]      `burned`\n        // - [225]      `nextInitialized`\n        // - [232..255] `extraData`\n        mapping(uint256 => uint256) _packedOwnerships;\n        // Mapping owner address to address data.\n        //\n        // Bits Layout:\n        // - [0..63]    `balance`\n        // - [64..127]  `numberMinted`\n        // - [128..191] `numberBurned`\n        // - [192..255] `aux`\n        mapping(address => uint256) _packedAddressData;\n        // Mapping from token ID to approved address.\n        mapping(uint256 => ERC721AStorage.TokenApprovalRef) _tokenApprovals;\n        // Mapping from owner to operator approvals\n        mapping(address => mapping(address => bool)) _operatorApprovals;\n    }\n\n    bytes32 internal constant STORAGE_SLOT =\n    keccak256(\"ERC721A.contracts.storage.ERC721A\");\n\n    function layout() internal pure returns (Layout storage l) {\n        bytes32 slot = STORAGE_SLOT;\n        assembly {\n            l.slot := slot\n        }\n    }\n}\n\n// File: erc721a-upgradeable/contracts/IERC721AUpgradeable.sol\n\n// ERC721A Contracts v4.2.3\n// Creator: Chiru Labs\n\npragma solidity ^0.8.4;\n\n/**\n * @dev Interface of ERC721A.\n */\ninterface IERC721AUpgradeable {\n    /**\n     * The caller must own the token or be an approved operator.\n     */\n    error ApprovalCallerNotOwnerNorApproved();\n\n    /**\n     * The token does not exist.\n     */\n    error ApprovalQueryForNonexistentToken();\n\n    /**\n     * Cannot query the balance for the zero address.\n     */\n    error BalanceQueryForZeroAddress();\n\n    /**\n     * Cannot mint to the zero address.\n     */\n    error MintToZeroAddress();\n\n    /**\n     * The quantity of tokens minted must be more than zero.\n     */\n    error MintZeroQuantity();\n\n    /**\n     * The token does not exist.\n     */\n    error OwnerQueryForNonexistentToken();\n\n    /**\n     * The caller must own the token or be an approved operator.\n     */\n    error TransferCallerNotOwnerNorApproved();\n\n    /**\n     * The token must be owned by `from`.\n     */\n    error TransferFromIncorrectOwner();\n\n    /**\n     * Cannot safely transfer to a contract that does not implement the\n     * ERC721Receiver interface.\n     */\n    error TransferToNonERC721ReceiverImplementer();\n\n    /**\n     * Cannot transfer to the zero address.\n     */\n    error TransferToZeroAddress();\n\n    /**\n     * The token does not exist.\n     */\n    error URIQueryForNonexistentToken();\n\n    /**\n     * The `quantity` minted with ERC2309 exceeds the safety limit.\n     */\n    error MintERC2309QuantityExceedsLimit();\n\n    /**\n     * The `extraData` cannot be set on an unintialized ownership slot.\n     */\n    error OwnershipNotInitializedForExtraData();\n\n    // =============================================================\n    //                            STRUCTS\n    // =============================================================\n\n    struct TokenOwnership {\n        // The address of the owner.\n        address addr;\n        // Stores the start time of ownership with minimal overhead for tokenomics.\n        uint64 startTimestamp;\n        // Whether the token has been burned.\n        bool burned;\n        // Arbitrary data similar to `startTimestamp` that can be set via {_extraData}.\n        uint24 extraData;\n    }\n\n    // =============================================================\n    //                         TOKEN COUNTERS\n    // =============================================================\n\n    /**\n     * @dev Returns the total number of tokens in existence.\n     * Burned tokens will reduce the count.\n     * To get the total number of tokens minted, please see {_totalMinted}.\n     */\n    function totalSupply() external view returns (uint256);\n\n    // =============================================================\n    //                            IERC165\n    // =============================================================\n\n    /**\n     * @dev Returns true if this contract implements the interface defined by\n     * `interfaceId`. See the corresponding\n     * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)\n     * to learn more about how these ids are created.\n     *\n     * This function call must use less than 30000 gas.\n     */\n    function supportsInterface(bytes4 interfaceId) external view returns (bool);\n\n    // =============================================================\n    //                            IERC721\n    // =============================================================\n\n    /**\n     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n     */\n    event Transfer(\n        address indexed from,\n        address indexed to,\n        uint256 indexed tokenId\n    );\n\n    /**\n     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n     */\n    event Approval(\n        address indexed owner,\n        address indexed approved,\n        uint256 indexed tokenId\n    );\n\n    /**\n     * @dev Emitted when `owner` enables or disables\n     * (`approved`) `operator` to manage all of its assets.\n     */\n    event ApprovalForAll(\n        address indexed owner,\n        address indexed operator,\n        bool approved\n    );\n\n    /**\n     * @dev Returns the number of tokens in `owner`'s account.\n     */\n    function balanceOf(address owner) external view returns (uint256 balance);\n\n    /**\n     * @dev Returns the owner of the `tokenId` token.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     */\n    function ownerOf(uint256 tokenId) external view returns (address owner);\n\n    /**\n     * @dev Safely transfers `tokenId` token from `from` to `to`,\n     * checking first that contract recipients are aware of the ERC721 protocol\n     * to prevent tokens from being forever locked.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must exist and be owned by `from`.\n     * - If the caller is not `from`, it must be have been allowed to move\n     * this token by either {approve} or {setApprovalForAll}.\n     * - If `to` refers to a smart contract, it must implement\n     * {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n     *\n     * Emits a {Transfer} event.\n     */\n    function safeTransferFrom(\n        address from,\n        address to,\n        uint256 tokenId,\n        bytes calldata data\n    ) external payable;\n\n    /**\n     * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.\n     */\n    function safeTransferFrom(\n        address from,\n        address to,\n        uint256 tokenId\n    ) external payable;\n\n    /**\n     * @dev Transfers `tokenId` from `from` to `to`.\n     *\n     * WARNING: Usage of this method is discouraged, use {safeTransferFrom}\n     * whenever possible.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must be owned by `from`.\n     * - If the caller is not `from`, it must be approved to move this token\n     * by either {approve} or {setApprovalForAll}.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(\n        address from,\n        address to,\n        uint256 tokenId\n    ) external payable;\n\n    /**\n     * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n     * The approval is cleared when the token is transferred.\n     *\n     * Only a single account can be approved at a time, so approving the\n     * zero address clears previous approvals.\n     *\n     * Requirements:\n     *\n     * - The caller must own the token or be an approved operator.\n     * - `tokenId` must exist.\n     *\n     * Emits an {Approval} event.\n     */\n    function approve(address to, uint256 tokenId) external payable;\n\n    /**\n     * @dev Approve or remove `operator` as an operator for the caller.\n     * Operators can call {transferFrom} or {safeTransferFrom}\n     * for any token owned by the caller.\n     *\n     * Requirements:\n     *\n     * - The `operator` cannot be the caller.\n     *\n     * Emits an {ApprovalForAll} event.\n     */\n    function setApprovalForAll(address operator, bool _approved) external;\n\n    /**\n     * @dev Returns the account approved for `tokenId` token.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     */\n    function getApproved(uint256 tokenId)\n    external\n    view\n    returns (address operator);\n\n    /**\n     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n     *\n     * See {setApprovalForAll}.\n     */\n    function isApprovedForAll(address owner, address operator)\n    external\n    view\n    returns (bool);\n\n    // =============================================================\n    //                        IERC721Metadata\n    // =============================================================\n\n    /**\n     * @dev Returns the token collection name.\n     */\n    function name() external view returns (string memory);\n\n    /**\n     * @dev Returns the token collection symbol.\n     */\n    function symbol() external view returns (string memory);\n\n    /**\n     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n     */\n    function tokenURI(uint256 tokenId) external view returns (string memory);\n\n    // =============================================================\n    //                           IERC2309\n    // =============================================================\n\n    /**\n     * @dev Emitted when tokens in `fromTokenId` to `toTokenId`\n     * (inclusive) is transferred from `from` to `to`, as defined in the\n     * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309) standard.\n     *\n     * See {_mintERC2309} for more details.\n     */\n    event ConsecutiveTransfer(\n        uint256 indexed fromTokenId,\n        uint256 toTokenId,\n        address indexed from,\n        address indexed to\n    );\n}\n\n// File: erc721a-upgradeable/contracts/ERC721AUpgradeable.sol\n\n// ERC721A Contracts v4.2.3\n// Creator: Chiru Labs\n\npragma solidity ^0.8.4;\n\n/**\n * @dev Interface of ERC721 token receiver.\n */\ninterface ERC721A__IERC721ReceiverUpgradeable {\n    function onERC721Received(\n        address operator,\n        address from,\n        uint256 tokenId,\n        bytes calldata data\n    ) external returns (bytes4);\n}\n\n/**\n * @title ERC721A\n *\n * @dev Implementation of the [ERC721](https://eips.ethereum.org/EIPS/eip-721)\n * Non-Fungible Token Standard, including the Metadata extension.\n * Optimized for lower gas during batch mints.\n *\n * Token IDs are minted in sequential order (e.g. 0, 1, 2, 3, ...)\n * starting from `_startTokenId()`.\n *\n * Assumptions:\n *\n * - An owner cannot have more than 2**64 - 1 (max value of uint64) of supply.\n * - The maximum token ID cannot exceed 2**256 - 1 (max value of uint256).\n */\ncontract ERC721AUpgradeable is ERC721A__Initializable, IERC721AUpgradeable {\n    using ERC721AStorage for ERC721AStorage.Layout;\n\n    // =============================================================\n    //                           CONSTANTS\n    // =============================================================\n\n    // Mask of an entry in packed address data.\n    uint256 private constant _BITMASK_ADDRESS_DATA_ENTRY = (1 << 64) - 1;\n\n    // The bit position of `numberMinted` in packed address data.\n    uint256 private constant _BITPOS_NUMBER_MINTED = 64;\n\n    // The bit position of `numberBurned` in packed address data.\n    uint256 private constant _BITPOS_NUMBER_BURNED = 128;\n\n    // The bit position of `aux` in packed address data.\n    uint256 private constant _BITPOS_AUX = 192;\n\n    // Mask of all 256 bits in packed address data except the 64 bits for `aux`.\n    uint256 private constant _BITMASK_AUX_COMPLEMENT = (1 << 192) - 1;\n\n    // The bit position of `startTimestamp` in packed ownership.\n    uint256 private constant _BITPOS_START_TIMESTAMP = 160;\n\n    // The bit mask of the `burned` bit in packed ownership.\n    uint256 private constant _BITMASK_BURNED = 1 << 224;\n\n    // The bit position of the `nextInitialized` bit in packed ownership.\n    uint256 private constant _BITPOS_NEXT_INITIALIZED = 225;\n\n    // The bit mask of the `nextInitialized` bit in packed ownership.\n    uint256 private constant _BITMASK_NEXT_INITIALIZED = 1 << 225;\n\n    // The bit position of `extraData` in packed ownership.\n    uint256 private constant _BITPOS_EXTRA_DATA = 232;\n\n    // Mask of all 256 bits in a packed ownership except the 24 bits for `extraData`.\n    uint256 private constant _BITMASK_EXTRA_DATA_COMPLEMENT = (1 << 232) - 1;\n\n    // The mask of the lower 160 bits for addresses.\n    uint256 private constant _BITMASK_ADDRESS = (1 << 160) - 1;\n\n    // The maximum `quantity` that can be minted with {_mintERC2309}.\n    // This limit is to prevent overflows on the address data entries.\n    // For a limit of 5000, a total of 3.689e15 calls to {_mintERC2309}\n    // is required to cause an overflow, which is unrealistic.\n    uint256 private constant _MAX_MINT_ERC2309_QUANTITY_LIMIT = 5000;\n\n    // The `Transfer` event signature is given by:\n    // `keccak256(bytes(\"Transfer(address,address,uint256)\"))`.\n    bytes32 private constant _TRANSFER_EVENT_SIGNATURE =\n    0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef;\n\n    // =============================================================\n    //                          CONSTRUCTOR\n    // =============================================================\n\n    function __ERC721A_init(string memory name_, string memory symbol_)\n    internal\n    onlyInitializingERC721A\n    {\n        __ERC721A_init_unchained(name_, symbol_);\n    }\n\n    function __ERC721A_init_unchained(\n        string memory name_,\n        string memory symbol_\n    ) internal onlyInitializingERC721A {\n        ERC721AStorage.layout()._name = name_;\n        ERC721AStorage.layout()._symbol = symbol_;\n        ERC721AStorage.layout()._currentIndex = _startTokenId();\n    }\n\n    // =============================================================\n    //                   TOKEN COUNTING OPERATIONS\n    // =============================================================\n\n    /**\n     * @dev Returns the starting token ID.\n     * To change the starting token ID, please override this function.\n     */\n    function _startTokenId() internal view virtual returns (uint256) {\n        return 0;\n    }\n\n    /**\n     * @dev Returns the next token ID to be minted.\n     */\n    function _nextTokenId() internal view virtual returns (uint256) {\n        return ERC721AStorage.layout()._currentIndex;\n    }\n\n    /**\n     * @dev Returns the total number of tokens in existence.\n     * Burned tokens will reduce the count.\n     * To get the total number of tokens minted, please see {_totalMinted}.\n     */\n    function totalSupply() public view virtual override returns (uint256) {\n        // Counter underflow is impossible as _burnCounter cannot be incremented\n        // more than `_currentIndex - _startTokenId()` times.\n    unchecked {\n        return\n        ERC721AStorage.layout()._currentIndex -\n        ERC721AStorage.layout()._burnCounter -\n        _startTokenId();\n    }\n    }\n\n    /**\n     * @dev Returns the total amount of tokens minted in the contract.\n     */\n    function _totalMinted() internal view virtual returns (uint256) {\n        // Counter underflow is impossible as `_currentIndex` does not decrement,\n        // and it is initialized to `_startTokenId()`.\n    unchecked {\n        return ERC721AStorage.layout()._currentIndex - _startTokenId();\n    }\n    }\n\n    /**\n     * @dev Returns the total number of tokens burned.\n     */\n    function _totalBurned() internal view virtual returns (uint256) {\n        return ERC721AStorage.layout()._burnCounter;\n    }\n\n    // =============================================================\n    //                    ADDRESS DATA OPERATIONS\n    // =============================================================\n\n    /**\n     * @dev Returns the number of tokens in `owner`'s account.\n     */\n    function balanceOf(address owner)\n    public\n    view\n    virtual\n    override\n    returns (uint256)\n    {\n        if (owner == address(0)) revert BalanceQueryForZeroAddress();\n        return\n        ERC721AStorage.layout()._packedAddressData[owner] &\n        _BITMASK_ADDRESS_DATA_ENTRY;\n    }\n\n    /**\n     * Returns the number of tokens minted by `owner`.\n     */\n    function _numberMinted(address owner) internal view returns (uint256) {\n        return\n        (ERC721AStorage.layout()._packedAddressData[owner] >>\n        _BITPOS_NUMBER_MINTED) & _BITMASK_ADDRESS_DATA_ENTRY;\n    }\n\n    /**\n     * Returns the number of tokens burned by or on behalf of `owner`.\n     */\n    function _numberBurned(address owner) internal view returns (uint256) {\n        return\n        (ERC721AStorage.layout()._packedAddressData[owner] >>\n        _BITPOS_NUMBER_BURNED) & _BITMASK_ADDRESS_DATA_ENTRY;\n    }\n\n    /**\n     * Returns the auxiliary data for `owner`. (e.g. number of whitelist mint slots used).\n     */\n    function _getAux(address owner) internal view returns (uint64) {\n        return\n        uint64(\n            ERC721AStorage.layout()._packedAddressData[owner] >> _BITPOS_AUX\n        );\n    }\n\n    /**\n     * Sets the auxiliary data for `owner`. (e.g. number of whitelist mint slots used).\n     * If there are multiple variables, please pack them into a uint64.\n     */\n    function _setAux(address owner, uint64 aux) internal virtual {\n        uint256 packed = ERC721AStorage.layout()._packedAddressData[owner];\n        uint256 auxCasted;\n        // Cast `aux` with assembly to avoid redundant masking.\n        assembly {\n            auxCasted := aux\n        }\n        packed =\n        (packed & _BITMASK_AUX_COMPLEMENT) |\n        (auxCasted << _BITPOS_AUX);\n        ERC721AStorage.layout()._packedAddressData[owner] = packed;\n    }\n\n    // =============================================================\n    //                            IERC165\n    // =============================================================\n\n    /**\n     * @dev Returns true if this contract implements the interface defined by\n     * `interfaceId`. See the corresponding\n     * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)\n     * to learn more about how these ids are created.\n     *\n     * This function call must use less than 30000 gas.\n     */\n    function supportsInterface(bytes4 interfaceId)\n    public\n    view\n    virtual\n    override\n    returns (bool)\n    {\n        // The interface IDs are constants representing the first 4 bytes\n        // of the XOR of all function selectors in the interface.\n        // See: [ERC165](https://eips.ethereum.org/EIPS/eip-165)\n        // (e.g. `bytes4(i.functionA.selector ^ i.functionB.selector ^ ...)`)\n        return\n        interfaceId == 0x01ffc9a7 || // ERC165 interface ID for ERC165.\n        interfaceId == 0x80ac58cd || // ERC165 interface ID for ERC721.\n        interfaceId == 0x5b5e139f; // ERC165 interface ID for ERC721Metadata.\n    }\n\n    // =============================================================\n    //                        IERC721Metadata\n    // =============================================================\n\n    /**\n     * @dev Returns the token collection name.\n     */\n    function name() public view virtual override returns (string memory) {\n        return ERC721AStorage.layout()._name;\n    }\n\n    /**\n     * @dev Returns the token collection symbol.\n     */\n    function symbol() public view virtual override returns (string memory) {\n        return ERC721AStorage.layout()._symbol;\n    }\n\n    /**\n     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n     */\n    function tokenURI(uint256 tokenId)\n    public\n    view\n    virtual\n    override\n    returns (string memory)\n    {\n        if (!_exists(tokenId)) revert URIQueryForNonexistentToken();\n\n        string memory baseURI = _baseURI();\n        return\n        bytes(baseURI).length != 0\n        ? string(abi.encodePacked(baseURI, _toString(tokenId)))\n        : \"\";\n    }\n\n    /**\n     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n     * by default, it can be overridden in child contracts.\n     */\n    function _baseURI() internal view virtual returns (string memory) {\n        return \"\";\n    }\n\n    // =============================================================\n    //                     OWNERSHIPS OPERATIONS\n    // =============================================================\n\n    /**\n     * @dev Returns the owner of the `tokenId` token.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     */\n    function ownerOf(uint256 tokenId)\n    public\n    view\n    virtual\n    override\n    returns (address)\n    {\n        return address(uint160(_packedOwnershipOf(tokenId)));\n    }\n\n    /**\n     * @dev Gas spent here starts off proportional to the maximum mint batch size.\n     * It gradually moves to O(1) as tokens get transferred around over time.\n     */\n    function _ownershipOf(uint256 tokenId)\n    internal\n    view\n    virtual\n    returns (TokenOwnership memory)\n    {\n        return _unpackedOwnership(_packedOwnershipOf(tokenId));\n    }\n\n    /**\n     * @dev Returns the unpacked `TokenOwnership` struct at `index`.\n     */\n    function _ownershipAt(uint256 index)\n    internal\n    view\n    virtual\n    returns (TokenOwnership memory)\n    {\n        return\n        _unpackedOwnership(\n            ERC721AStorage.layout()._packedOwnerships[index]\n        );\n    }\n\n    /**\n     * @dev Initializes the ownership slot minted at `index` for efficiency purposes.\n     */\n    function _initializeOwnershipAt(uint256 index) internal virtual {\n        if (ERC721AStorage.layout()._packedOwnerships[index] == 0) {\n            ERC721AStorage.layout()._packedOwnerships[\n            index\n            ] = _packedOwnershipOf(index);\n        }\n    }\n\n    /**\n     * Returns the packed ownership data of `tokenId`.\n     */\n    function _packedOwnershipOf(uint256 tokenId)\n    private\n    view\n    returns (uint256 packed)\n    {\n        if (_startTokenId() <= tokenId) {\n            packed = ERC721AStorage.layout()._packedOwnerships[tokenId];\n            // If not burned.\n            if (packed & _BITMASK_BURNED == 0) {\n                // If the data at the starting slot does not exist, start the scan.\n                if (packed == 0) {\n                    if (tokenId >= ERC721AStorage.layout()._currentIndex)\n                        revert OwnerQueryForNonexistentToken();\n                    // Invariant:\n                    // There will always be an initialized ownership slot\n                    // (i.e. `ownership.addr != address(0) && ownership.burned == false`)\n                    // before an unintialized ownership slot\n                    // (i.e. `ownership.addr == address(0) && ownership.burned == false`)\n                    // Hence, `tokenId` will not underflow.\n                    //\n                    // We can directly compare the packed value.\n                    // If the address is zero, packed will be zero.\n                    for (;;) {\n                    unchecked {\n                        packed = ERC721AStorage.layout()._packedOwnerships[\n                        --tokenId\n                        ];\n                    }\n                        if (packed == 0) continue;\n                        return packed;\n                    }\n                }\n                // Otherwise, the data exists and is not burned. We can skip the scan.\n                // This is possible because we have already achieved the target condition.\n                // This saves 2143 gas on transfers of initialized tokens.\n                return packed;\n            }\n        }\n        revert OwnerQueryForNonexistentToken();\n    }\n\n    /**\n     * @dev Returns the unpacked `TokenOwnership` struct from `packed`.\n     */\n    function _unpackedOwnership(uint256 packed)\n    private\n    pure\n    returns (TokenOwnership memory ownership)\n    {\n        ownership.addr = address(uint160(packed));\n        ownership.startTimestamp = uint64(packed >> _BITPOS_START_TIMESTAMP);\n        ownership.burned = packed & _BITMASK_BURNED != 0;\n        ownership.extraData = uint24(packed >> _BITPOS_EXTRA_DATA);\n    }\n\n    /**\n     * @dev Packs ownership data into a single uint256.\n     */\n    function _packOwnershipData(address owner, uint256 flags)\n    private\n    view\n    returns (uint256 result)\n    {\n        assembly {\n        // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean.\n            owner := and(owner, _BITMASK_ADDRESS)\n        // `owner | (block.timestamp << _BITPOS_START_TIMESTAMP) | flags`.\n            result := or(\n            owner,\n            or(shl(_BITPOS_START_TIMESTAMP, timestamp()), flags)\n            )\n        }\n    }\n\n    /**\n     * @dev Returns the `nextInitialized` flag set if `quantity` equals 1.\n     */\n    function _nextInitializedFlag(uint256 quantity)\n    private\n    pure\n    returns (uint256 result)\n    {\n        // For branchless setting of the `nextInitialized` flag.\n        assembly {\n        // `(quantity == 1) << _BITPOS_NEXT_INITIALIZED`.\n            result := shl(_BITPOS_NEXT_INITIALIZED, eq(quantity, 1))\n        }\n    }\n\n    // =============================================================\n    //                      APPROVAL OPERATIONS\n    // =============================================================\n\n    /**\n     * @dev Gives permission to `to` to transfer `tokenId` token to another account. See {ERC721A-_approve}.\n     *\n     * Requirements:\n     *\n     * - The caller must own the token or be an approved operator.\n     */\n    function approve(address to, uint256 tokenId)\n    public\n    payable\n    virtual\n    override\n    {\n        _approve(to, tokenId, true);\n    }\n\n    /**\n     * @dev Returns the account approved for `tokenId` token.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     */\n    function getApproved(uint256 tokenId)\n    public\n    view\n    virtual\n    override\n    returns (address)\n    {\n        if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();\n\n        return ERC721AStorage.layout()._tokenApprovals[tokenId].value;\n    }\n\n    /**\n     * @dev Approve or remove `operator` as an operator for the caller.\n     * Operators can call {transferFrom} or {safeTransferFrom}\n     * for any token owned by the caller.\n     *\n     * Requirements:\n     *\n     * - The `operator` cannot be the caller.\n     *\n     * Emits an {ApprovalForAll} event.\n     */\n    function setApprovalForAll(address operator, bool approved)\n    public\n    virtual\n    override\n    {\n        ERC721AStorage.layout()._operatorApprovals[_msgSenderERC721A()][\n        operator\n        ] = approved;\n        emit ApprovalForAll(_msgSenderERC721A(), operator, approved);\n    }\n\n    /**\n     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n     *\n     * See {setApprovalForAll}.\n     */\n    function isApprovedForAll(address owner, address operator)\n    public\n    view\n    virtual\n    override\n    returns (bool)\n    {\n        return ERC721AStorage.layout()._operatorApprovals[owner][operator];\n    }\n\n    /**\n     * @dev Returns whether `tokenId` exists.\n     *\n     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n     *\n     * Tokens start existing when they are minted. See {_mint}.\n     */\n    function _exists(uint256 tokenId) internal view virtual returns (bool) {\n        return\n        _startTokenId() <= tokenId &&\n        tokenId < ERC721AStorage.layout()._currentIndex && // If within bounds,\n        ERC721AStorage.layout()._packedOwnerships[tokenId] &\n        _BITMASK_BURNED ==\n        0; // and not burned.\n    }\n\n    /**\n     * @dev Returns whether `msgSender` is equal to `approvedAddress` or `owner`.\n     */\n    function _isSenderApprovedOrOwner(\n        address approvedAddress,\n        address owner,\n        address msgSender\n    ) private pure returns (bool result) {\n        assembly {\n        // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean.\n            owner := and(owner, _BITMASK_ADDRESS)\n        // Mask `msgSender` to the lower 160 bits, in case the upper bits somehow aren't clean.\n            msgSender := and(msgSender, _BITMASK_ADDRESS)\n        // `msgSender == owner || msgSender == approvedAddress`.\n            result := or(eq(msgSender, owner), eq(msgSender, approvedAddress))\n        }\n    }\n\n    /**\n     * @dev Returns the storage slot and value for the approved address of `tokenId`.\n     */\n    function _getApprovedSlotAndAddress(uint256 tokenId)\n    private\n    view\n    returns (uint256 approvedAddressSlot, address approvedAddress)\n    {\n        ERC721AStorage.TokenApprovalRef storage tokenApproval = ERC721AStorage\n        .layout()\n        ._tokenApprovals[tokenId];\n        // The following is equivalent to `approvedAddress = _tokenApprovals[tokenId].value`.\n        assembly {\n            approvedAddressSlot := tokenApproval.slot\n            approvedAddress := sload(approvedAddressSlot)\n        }\n    }\n\n    // =============================================================\n    //                      TRANSFER OPERATIONS\n    // =============================================================\n\n    /**\n     * @dev Transfers `tokenId` from `from` to `to`.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must be owned by `from`.\n     * - If the caller is not `from`, it must be approved to move this token\n     * by either {approve} or {setApprovalForAll}.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(\n        address from,\n        address to,\n        uint256 tokenId\n    ) public payable virtual override {\n        uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);\n\n        if (address(uint160(prevOwnershipPacked)) != from)\n            revert TransferFromIncorrectOwner();\n\n        (\n        uint256 approvedAddressSlot,\n        address approvedAddress\n        ) = _getApprovedSlotAndAddress(tokenId);\n\n        // The nested ifs save around 20+ gas over a compound boolean condition.\n        if (\n            !_isSenderApprovedOrOwner(\n            approvedAddress,\n            from,\n            _msgSenderERC721A()\n        )\n        )\n            if (!isApprovedForAll(from, _msgSenderERC721A()))\n                revert TransferCallerNotOwnerNorApproved();\n\n        if (to == address(0)) revert TransferToZeroAddress();\n\n        _beforeTokenTransfers(from, to, tokenId, 1);\n\n        // Clear approvals from the previous owner.\n        assembly {\n            if approvedAddress {\n            // This is equivalent to `delete _tokenApprovals[tokenId]`.\n                sstore(approvedAddressSlot, 0)\n            }\n        }\n\n        // Underflow of the sender's balance is impossible because we check for\n        // ownership above and the recipient's balance can't realistically overflow.\n        // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256.\n    unchecked {\n        // We can directly increment and decrement the balances.\n        --ERC721AStorage.layout()._packedAddressData[from]; // Updates: `balance -= 1`.\n        ++ERC721AStorage.layout()._packedAddressData[to]; // Updates: `balance += 1`.\n\n        // Updates:\n        // - `address` to the next owner.\n        // - `startTimestamp` to the timestamp of transfering.\n        // - `burned` to `false`.\n        // - `nextInitialized` to `true`.\n        ERC721AStorage.layout()._packedOwnerships[\n        tokenId\n        ] = _packOwnershipData(\n            to,\n            _BITMASK_NEXT_INITIALIZED |\n            _nextExtraData(from, to, prevOwnershipPacked)\n        );\n\n        // If the next slot may not have been initialized (i.e. `nextInitialized == false`) .\n        if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) {\n            uint256 nextTokenId = tokenId + 1;\n            // If the next slot's address is zero and not burned (i.e. packed value is zero).\n            if (\n                ERC721AStorage.layout()._packedOwnerships[nextTokenId] == 0\n            ) {\n                // If the next slot is within bounds.\n                if (nextTokenId != ERC721AStorage.layout()._currentIndex) {\n                    // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`.\n                    ERC721AStorage.layout()._packedOwnerships[\n                    nextTokenId\n                    ] = prevOwnershipPacked;\n                }\n            }\n        }\n    }\n\n        emit Transfer(from, to, tokenId);\n        _afterTokenTransfers(from, to, tokenId, 1);\n    }\n\n    /**\n     * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.\n     */\n    function safeTransferFrom(\n        address from,\n        address to,\n        uint256 tokenId\n    ) public payable virtual override {\n        safeTransferFrom(from, to, tokenId, \"\");\n    }\n\n    /**\n     * @dev Safely transfers `tokenId` token from `from` to `to`.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must exist and be owned by `from`.\n     * - If the caller is not `from`, it must be approved to move this token\n     * by either {approve} or {setApprovalForAll}.\n     * - If `to` refers to a smart contract, it must implement\n     * {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n     *\n     * Emits a {Transfer} event.\n     */\n    function safeTransferFrom(\n        address from,\n        address to,\n        uint256 tokenId,\n        bytes memory _data\n    ) public payable virtual override {\n        transferFrom(from, to, tokenId);\n        if (to.code.length != 0)\n            if (!_checkContractOnERC721Received(from, to, tokenId, _data)) {\n                revert TransferToNonERC721ReceiverImplementer();\n            }\n    }\n\n    /**\n     * @dev Hook that is called before a set of serially-ordered token IDs\n     * are about to be transferred. This includes minting.\n     * And also called before burning one token.\n     *\n     * `startTokenId` - the first token ID to be transferred.\n     * `quantity` - the amount to be transferred.\n     *\n     * Calling conditions:\n     *\n     * - When `from` and `to` are both non-zero, `from`'s `tokenId` will be\n     * transferred to `to`.\n     * - When `from` is zero, `tokenId` will be minted for `to`.\n     * - When `to` is zero, `tokenId` will be burned by `from`.\n     * - `from` and `to` are never both zero.\n     */\n    function _beforeTokenTransfers(\n        address from,\n        address to,\n        uint256 startTokenId,\n        uint256 quantity\n    ) internal virtual {}\n\n    /**\n     * @dev Hook that is called after a set of serially-ordered token IDs\n     * have been transferred. This includes minting.\n     * And also called after one token has been burned.\n     *\n     * `startTokenId` - the first token ID to be transferred.\n     * `quantity` - the amount to be transferred.\n     *\n     * Calling conditions:\n     *\n     * - When `from` and `to` are both non-zero, `from`'s `tokenId` has been\n     * transferred to `to`.\n     * - When `from` is zero, `tokenId` has been minted for `to`.\n     * - When `to` is zero, `tokenId` has been burned by `from`.\n     * - `from` and `to` are never both zero.\n     */\n    function _afterTokenTransfers(\n        address from,\n        address to,\n        uint256 startTokenId,\n        uint256 quantity\n    ) internal virtual {}\n\n    /**\n     * @dev Private function to invoke {IERC721Receiver-onERC721Received} on a target contract.\n     *\n     * `from` - Previous owner of the given token ID.\n     * `to` - Target address that will receive the token.\n     * `tokenId` - Token ID to be transferred.\n     * `_data` - Optional data to send along with the call.\n     *\n     * Returns whether the call correctly returned the expected magic value.\n     */\n    function _checkContractOnERC721Received(\n        address from,\n        address to,\n        uint256 tokenId,\n        bytes memory _data\n    ) private returns (bool) {\n        try\n        ERC721A__IERC721ReceiverUpgradeable(to).onERC721Received(\n            _msgSenderERC721A(),\n            from,\n            tokenId,\n            _data\n        )\n        returns (bytes4 retval) {\n            return\n            retval ==\n            ERC721A__IERC721ReceiverUpgradeable(to)\n            .onERC721Received\n            .selector;\n        } catch (bytes memory reason) {\n            if (reason.length == 0) {\n                revert TransferToNonERC721ReceiverImplementer();\n            } else {\n                assembly {\n                    revert(add(32, reason), mload(reason))\n                }\n            }\n        }\n    }\n\n    // =============================================================\n    //                        MINT OPERATIONS\n    // =============================================================\n\n    /**\n     * @dev Mints `quantity` tokens and transfers them to `to`.\n     *\n     * Requirements:\n     *\n     * - `to` cannot be the zero address.\n     * - `quantity` must be greater than 0.\n     *\n     * Emits a {Transfer} event for each mint.\n     */\n    function _mint(address to, uint256 quantity) internal virtual {\n        uint256 startTokenId = ERC721AStorage.layout()._currentIndex;\n        if (quantity == 0) revert MintZeroQuantity();\n\n        _beforeTokenTransfers(address(0), to, startTokenId, quantity);\n\n        // Overflows are incredibly unrealistic.\n        // `balance` and `numberMinted` have a maximum limit of 2**64.\n        // `tokenId` has a maximum limit of 2**256.\n    unchecked {\n        // Updates:\n        // - `balance += quantity`.\n        // - `numberMinted += quantity`.\n        //\n        // We can directly add to the `balance` and `numberMinted`.\n        ERC721AStorage.layout()._packedAddressData[to] +=\n        quantity *\n        ((1 << _BITPOS_NUMBER_MINTED) | 1);\n\n        // Updates:\n        // - `address` to the owner.\n        // - `startTimestamp` to the timestamp of minting.\n        // - `burned` to `false`.\n        // - `nextInitialized` to `quantity == 1`.\n        ERC721AStorage.layout()._packedOwnerships[\n        startTokenId\n        ] = _packOwnershipData(\n            to,\n            _nextInitializedFlag(quantity) |\n            _nextExtraData(address(0), to, 0)\n        );\n\n        uint256 toMasked;\n        uint256 end = startTokenId + quantity;\n\n        // Use assembly to loop and emit the `Transfer` event for gas savings.\n        // The duplicated `log4` removes an extra check and reduces stack juggling.\n        // The assembly, together with the surrounding Solidity code, have been\n        // delicately arranged to nudge the compiler into producing optimized opcodes.\n        assembly {\n        // Mask `to` to the lower 160 bits, in case the upper bits somehow aren't clean.\n            toMasked := and(to, _BITMASK_ADDRESS)\n        // Emit the `Transfer` event.\n            log4(\n            0, // Start of data (0, since no data).\n            0, // End of data (0, since no data).\n            _TRANSFER_EVENT_SIGNATURE, // Signature.\n            0, // `address(0)`.\n            toMasked, // `to`.\n            startTokenId // `tokenId`.\n            )\n\n        // The `iszero(eq(,))` check ensures that large values of `quantity`\n        // that overflows uint256 will make the loop run out of gas.\n        // The compiler will optimize the `iszero` away for performance.\n            for {\n                let tokenId := add(startTokenId, 1)\n            } iszero(eq(tokenId, end)) {\n                tokenId := add(tokenId, 1)\n            } {\n            // Emit the `Transfer` event. Similar to above.\n                log4(0, 0, _TRANSFER_EVENT_SIGNATURE, 0, toMasked, tokenId)\n            }\n        }\n        if (toMasked == 0) revert MintToZeroAddress();\n\n        ERC721AStorage.layout()._currentIndex = end;\n    }\n        _afterTokenTransfers(address(0), to, startTokenId, quantity);\n    }\n\n    /**\n     * @dev Mints `quantity` tokens and transfers them to `to`.\n     *\n     * This function is intended for efficient minting only during contract creation.\n     *\n     * It emits only one {ConsecutiveTransfer} as defined in\n     * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309),\n     * instead of a sequence of {Transfer} event(s).\n     *\n     * Calling this function outside of contract creation WILL make your contract\n     * non-compliant with the ERC721 standard.\n     * For full ERC721 compliance, substituting ERC721 {Transfer} event(s) with the ERC2309\n     * {ConsecutiveTransfer} event is only permissible during contract creation.\n     *\n     * Requirements:\n     *\n     * - `to` cannot be the zero address.\n     * - `quantity` must be greater than 0.\n     *\n     * Emits a {ConsecutiveTransfer} event.\n     */\n    function _mintERC2309(address to, uint256 quantity) internal virtual {\n        uint256 startTokenId = ERC721AStorage.layout()._currentIndex;\n        if (to == address(0)) revert MintToZeroAddress();\n        if (quantity == 0) revert MintZeroQuantity();\n        if (quantity > _MAX_MINT_ERC2309_QUANTITY_LIMIT)\n            revert MintERC2309QuantityExceedsLimit();\n\n        _beforeTokenTransfers(address(0), to, startTokenId, quantity);\n\n        // Overflows are unrealistic due to the above check for `quantity` to be below the limit.\n    unchecked {\n        // Updates:\n        // - `balance += quantity`.\n        // - `numberMinted += quantity`.\n        //\n        // We can directly add to the `balance` and `numberMinted`.\n        ERC721AStorage.layout()._packedAddressData[to] +=\n        quantity *\n        ((1 << _BITPOS_NUMBER_MINTED) | 1);\n\n        // Updates:\n        // - `address` to the owner.\n        // - `startTimestamp` to the timestamp of minting.\n        // - `burned` to `false`.\n        // - `nextInitialized` to `quantity == 1`.\n        ERC721AStorage.layout()._packedOwnerships[\n        startTokenId\n        ] = _packOwnershipData(\n            to,\n            _nextInitializedFlag(quantity) |\n            _nextExtraData(address(0), to, 0)\n        );\n\n        emit ConsecutiveTransfer(\n            startTokenId,\n            startTokenId + quantity - 1,\n            address(0),\n            to\n        );\n\n        ERC721AStorage.layout()._currentIndex = startTokenId + quantity;\n    }\n        _afterTokenTransfers(address(0), to, startTokenId, quantity);\n    }\n\n    /**\n     * @dev Safely mints `quantity` tokens and transfers them to `to`.\n     *\n     * Requirements:\n     *\n     * - If `to` refers to a smart contract, it must implement\n     * {IERC721Receiver-onERC721Received}, which is called for each safe transfer.\n     * - `quantity` must be greater than 0.\n     *\n     * See {_mint}.\n     *\n     * Emits a {Transfer} event for each mint.\n     */\n    function _safeMint(\n        address to,\n        uint256 quantity,\n        bytes memory _data\n    ) internal virtual {\n        _mint(to, quantity);\n\n    unchecked {\n        if (to.code.length != 0) {\n            uint256 end = ERC721AStorage.layout()._currentIndex;\n            uint256 index = end - quantity;\n            do {\n                if (\n                    !_checkContractOnERC721Received(\n                    address(0),\n                    to,\n                    index++,\n                    _data\n                )\n                ) {\n                    revert TransferToNonERC721ReceiverImplementer();\n                }\n            } while (index < end);\n            // Reentrancy protection.\n            if (ERC721AStorage.layout()._currentIndex != end) revert();\n        }\n    }\n    }\n\n    /**\n     * @dev Equivalent to `_safeMint(to, quantity, '')`.\n     */\n    function _safeMint(address to, uint256 quantity) internal virtual {\n        _safeMint(to, quantity, \"\");\n    }\n\n    // =============================================================\n    //                       APPROVAL OPERATIONS\n    // =============================================================\n\n    /**\n     * @dev Equivalent to `_approve(to, tokenId, false)`.\n     */\n    function _approve(address to, uint256 tokenId) internal virtual {\n        _approve(to, tokenId, false);\n    }\n\n    /**\n     * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n     * The approval is cleared when the token is transferred.\n     *\n     * Only a single account can be approved at a time, so approving the\n     * zero address clears previous approvals.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     *\n     * Emits an {Approval} event.\n     */\n    function _approve(\n        address to,\n        uint256 tokenId,\n        bool approvalCheck\n    ) internal virtual {\n        address owner = ownerOf(tokenId);\n\n        if (approvalCheck)\n            if (_msgSenderERC721A() != owner)\n                if (!isApprovedForAll(owner, _msgSenderERC721A())) {\n                    revert ApprovalCallerNotOwnerNorApproved();\n                }\n\n        ERC721AStorage.layout()._tokenApprovals[tokenId].value = to;\n        emit Approval(owner, to, tokenId);\n    }\n\n    // =============================================================\n    //                        BURN OPERATIONS\n    // =============================================================\n\n    /**\n     * @dev Equivalent to `_burn(tokenId, false)`.\n     */\n    function _burn(uint256 tokenId) internal virtual {\n        _burn(tokenId, false);\n    }\n\n    /**\n     * @dev Destroys `tokenId`.\n     * The approval is cleared when the token is burned.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     *\n     * Emits a {Transfer} event.\n     */\n    function _burn(uint256 tokenId, bool approvalCheck) internal virtual {\n        uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);\n\n        address from = address(uint160(prevOwnershipPacked));\n\n        (\n        uint256 approvedAddressSlot,\n        address approvedAddress\n        ) = _getApprovedSlotAndAddress(tokenId);\n\n        if (approvalCheck) {\n            // The nested ifs save around 20+ gas over a compound boolean condition.\n            if (\n                !_isSenderApprovedOrOwner(\n                approvedAddress,\n                from,\n                _msgSenderERC721A()\n            )\n            )\n                if (!isApprovedForAll(from, _msgSenderERC721A()))\n                    revert TransferCallerNotOwnerNorApproved();\n        }\n\n        _beforeTokenTransfers(from, address(0), tokenId, 1);\n\n        // Clear approvals from the previous owner.\n        assembly {\n            if approvedAddress {\n            // This is equivalent to `delete _tokenApprovals[tokenId]`.\n                sstore(approvedAddressSlot, 0)\n            }\n        }\n\n        // Underflow of the sender's balance is impossible because we check for\n        // ownership above and the recipient's balance can't realistically overflow.\n        // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256.\n    unchecked {\n        // Updates:\n        // - `balance -= 1`.\n        // - `numberBurned += 1`.\n        //\n        // We can directly decrement the balance, and increment the number burned.\n        // This is equivalent to `packed -= 1; packed += 1 << _BITPOS_NUMBER_BURNED;`.\n        ERC721AStorage.layout()._packedAddressData[from] +=\n        (1 << _BITPOS_NUMBER_BURNED) -\n        1;\n\n        // Updates:\n        // - `address` to the last owner.\n        // - `startTimestamp` to the timestamp of burning.\n        // - `burned` to `true`.\n        // - `nextInitialized` to `true`.\n        ERC721AStorage.layout()._packedOwnerships[\n        tokenId\n        ] = _packOwnershipData(\n            from,\n            (_BITMASK_BURNED | _BITMASK_NEXT_INITIALIZED) |\n            _nextExtraData(from, address(0), prevOwnershipPacked)\n        );\n\n        // If the next slot may not have been initialized (i.e. `nextInitialized == false`) .\n        if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) {\n            uint256 nextTokenId = tokenId + 1;\n            // If the next slot's address is zero and not burned (i.e. packed value is zero).\n            if (\n                ERC721AStorage.layout()._packedOwnerships[nextTokenId] == 0\n            ) {\n                // If the next slot is within bounds.\n                if (nextTokenId != ERC721AStorage.layout()._currentIndex) {\n                    // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`.\n                    ERC721AStorage.layout()._packedOwnerships[\n                    nextTokenId\n                    ] = prevOwnershipPacked;\n                }\n            }\n        }\n    }\n\n        emit Transfer(from, address(0), tokenId);\n        _afterTokenTransfers(from, address(0), tokenId, 1);\n\n        // Overflow not possible, as _burnCounter cannot be exceed _currentIndex times.\n    unchecked {\n        ERC721AStorage.layout()._burnCounter++;\n    }\n    }\n\n    // =============================================================\n    //                     EXTRA DATA OPERATIONS\n    // =============================================================\n\n    /**\n     * @dev Directly sets the extra data for the ownership data `index`.\n     */\n    function _setExtraDataAt(uint256 index, uint24 extraData) internal virtual {\n        uint256 packed = ERC721AStorage.layout()._packedOwnerships[index];\n        if (packed == 0) revert OwnershipNotInitializedForExtraData();\n        uint256 extraDataCasted;\n        // Cast `extraData` with assembly to avoid redundant masking.\n        assembly {\n            extraDataCasted := extraData\n        }\n        packed =\n        (packed & _BITMASK_EXTRA_DATA_COMPLEMENT) |\n        (extraDataCasted << _BITPOS_EXTRA_DATA);\n        ERC721AStorage.layout()._packedOwnerships[index] = packed;\n    }\n\n    /**\n     * @dev Called during each token transfer to set the 24bit `extraData` field.\n     * Intended to be overridden by the cosumer contract.\n     *\n     * `previousExtraData` - the value of `extraData` before transfer.\n     *\n     * Calling conditions:\n     *\n     * - When `from` and `to` are both non-zero, `from`'s `tokenId` will be\n     * transferred to `to`.\n     * - When `from` is zero, `tokenId` will be minted for `to`.\n     * - When `to` is zero, `tokenId` will be burned by `from`.\n     * - `from` and `to` are never both zero.\n     */\n    function _extraData(\n        address from,\n        address to,\n        uint24 previousExtraData\n    ) internal view virtual returns (uint24) {}\n\n    /**\n     * @dev Returns the next extra data for the packed ownership data.\n     * The returned result is shifted into position.\n     */\n    function _nextExtraData(\n        address from,\n        address to,\n        uint256 prevOwnershipPacked\n    ) private view returns (uint256) {\n        uint24 extraData = uint24(prevOwnershipPacked >> _BITPOS_EXTRA_DATA);\n        return uint256(_extraData(from, to, extraData)) << _BITPOS_EXTRA_DATA;\n    }\n\n    // =============================================================\n    //                       OTHER OPERATIONS\n    // =============================================================\n\n    /**\n     * @dev Returns the message sender (defaults to `msg.sender`).\n     *\n     * If you are writing GSN compatible contracts, you need to override this function.\n     */\n    function _msgSenderERC721A() internal view virtual returns (address) {\n        return msg.sender;\n    }\n\n    /**\n     * @dev Converts a uint256 to its ASCII string decimal representation.\n     */\n    function _toString(uint256 value)\n    internal\n    pure\n    virtual\n    returns (string memory str)\n    {\n        assembly {\n        // The maximum value of a uint256 contains 78 digits (1 byte per digit), but\n        // we allocate 0xa0 bytes to keep the free memory pointer 32-byte word aligned.\n        // We will need 1 word for the trailing zeros padding, 1 word for the length,\n        // and 3 words for a maximum of 78 digits. Total: 5 * 0x20 = 0xa0.\n            let m := add(mload(0x40), 0xa0)\n        // Update the free memory pointer to allocate.\n            mstore(0x40, m)\n        // Assign the `str` to the end.\n            str := sub(m, 0x20)\n        // Zeroize the slot after the string.\n            mstore(str, 0)\n\n        // Cache the end of the memory to calculate the length later.\n            let end := str\n\n        // We write the string from rightmost digit to leftmost digit.\n        // The following is essentially a do-while loop that also handles the zero case.\n        // prettier-ignore\n            for { let temp := value } 1 {} {\n                str := sub(str, 1)\n            // Write the character to the pointer.\n            // The ASCII index of the '0' character is 48.\n                mstore8(str, add(48, mod(temp, 10)))\n            // Keep dividing `temp` until zero.\n                temp := div(temp, 10)\n            // prettier-ignore\n                if iszero(temp) { break }\n            }\n\n            let length := sub(end, str)\n        // Move the pointer 32 bytes leftwards to make room for the length.\n            str := sub(str, 0x20)\n        // Store the length.\n            mstore(str, length)\n        }\n    }\n}\n\n// File: contracts/tokenrun/ERC721x/ERC721x.sol\n\npragma solidity ^0.8.14;\n\ncontract ERC721x is Initializable, ERC721AUpgradeable, LockRegistry {\n    /*\n     *     bytes4(keccak256('freeId(uint256,address)')) == 0x94d216d6\n     *     bytes4(keccak256('isUnlocked(uint256)')) == 0x72abc8b7\n     *     bytes4(keccak256('lockCount(uint256)')) == 0x650b00f6\n     *     bytes4(keccak256('lockId(uint256)')) == 0x2799cde0\n     *     bytes4(keccak256('lockMap(uint256,uint256)')) == 0x2cba8123\n     *     bytes4(keccak256('lockMapIndex(uint256,address)')) == 0x09308e5d\n     *     bytes4(keccak256('unlockId(uint256)')) == 0x40a9c8df\n     *     bytes4(keccak256('approvedContract(address)')) == 0xb1a6505f\n     *\n     *     => 0x94d216d6 ^ 0x72abc8b7 ^ 0x650b00f6 ^ 0x2799cde0 ^\n     *        0x2cba8123 ^ 0x09308e5d ^ 0x40a9c8df ^ 0xb1a6505f == 0x706e8489\n     */\n\n    bytes4 private constant _INTERFACE_ID_ERC721x = 0x706e8489;\n\n    function __ERC721x_init(string memory _name, string memory _symbol)\n    internal\n    onlyInitializing\n    {\n        ERC721AUpgradeable.__ERC721A_init(_name, _symbol);\n        LockRegistry.__LockRegistry_init();\n    }\n\n    function supportsInterface(bytes4 _interfaceId)\n    public\n    view\n    virtual\n    override(ERC721AUpgradeable)\n    returns (bool)\n    {\n        return\n        _interfaceId == _INTERFACE_ID_ERC721x ||\n        super.supportsInterface(_interfaceId);\n    }\n\n    function transferFrom(\n        address _from,\n        address _to,\n        uint256 _tokenId\n    ) public payable virtual override(ERC721AUpgradeable) {\n        require(isUnlocked(_tokenId), \"Token is locked\");\n        ERC721AUpgradeable.transferFrom(_from, _to, _tokenId);\n    }\n\n    function safeTransferFrom(\n        address _from,\n        address _to,\n        uint256 _tokenId,\n        bytes memory _data\n    ) public payable virtual override(ERC721AUpgradeable) {\n        require(isUnlocked(_tokenId), \"Token is locked\");\n        ERC721AUpgradeable.safeTransferFrom(_from, _to, _tokenId, _data);\n    }\n\n    function lockId(uint256 _id) external virtual override {\n        require(_exists(_id), \"Token !exist\");\n        _lockId(_id);\n    }\n\n    function unlockId(uint256 _id) external virtual override {\n        require(_exists(_id), \"Token !exist\");\n        _unlockId(_id);\n    }\n\n    function freeId(uint256 _id, address _contract) external virtual override {\n        require(_exists(_id), \"Token !exist\");\n        _freeId(_id, _contract);\n    }\n}\n\n// File: @openzeppelin/contracts/utils/introspection/IERC165.sol\n\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n    /**\n     * @dev Returns true if this contract implements the interface defined by\n     * `interfaceId`. See the corresponding\n     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n     * to learn more about how these ids are created.\n     *\n     * This function call must use less than 30 000 gas.\n     */\n    function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n\n// File: @openzeppelin/contracts/token/ERC721/IERC721.sol\n\n// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n    /**\n     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n     */\n    event Transfer(\n        address indexed from,\n        address indexed to,\n        uint256 indexed tokenId\n    );\n\n    /**\n     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n     */\n    event Approval(\n        address indexed owner,\n        address indexed approved,\n        uint256 indexed tokenId\n    );\n\n    /**\n     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n     */\n    event ApprovalForAll(\n        address indexed owner,\n        address indexed operator,\n        bool approved\n    );\n\n    /**\n     * @dev Returns the number of tokens in ``owner``'s account.\n     */\n    function balanceOf(address owner) external view returns (uint256 balance);\n\n    /**\n     * @dev Returns the owner of the `tokenId` token.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     */\n    function ownerOf(uint256 tokenId) external view returns (address owner);\n\n    /**\n     * @dev Safely transfers `tokenId` token from `from` to `to`.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must exist and be owned by `from`.\n     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n     *\n     * Emits a {Transfer} event.\n     */\n    function safeTransferFrom(\n        address from,\n        address to,\n        uint256 tokenId,\n        bytes calldata data\n    ) external;\n\n    /**\n     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n     * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must exist and be owned by `from`.\n     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n     *\n     * Emits a {Transfer} event.\n     */\n    function safeTransferFrom(\n        address from,\n        address to,\n        uint256 tokenId\n    ) external;\n\n    /**\n     * @dev Transfers `tokenId` token from `from` to `to`.\n     *\n     * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n     * understand this adds an external call which potentially creates a reentrancy vulnerability.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must be owned by `from`.\n     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(\n        address from,\n        address to,\n        uint256 tokenId\n    ) external;\n\n    /**\n     * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n     * The approval is cleared when the token is transferred.\n     *\n     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n     *\n     * Requirements:\n     *\n     * - The caller must own the token or be an approved operator.\n     * - `tokenId` must exist.\n     *\n     * Emits an {Approval} event.\n     */\n    function approve(address to, uint256 tokenId) external;\n\n    /**\n     * @dev Approve or remove `operator` as an operator for the caller.\n     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n     *\n     * Requirements:\n     *\n     * - The `operator` cannot be the caller.\n     *\n     * Emits an {ApprovalForAll} event.\n     */\n    function setApprovalForAll(address operator, bool approved) external;\n\n    /**\n     * @dev Returns the account approved for `tokenId` token.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     */\n    function getApproved(uint256 tokenId)\n    external\n    view\n    returns (address operator);\n\n    /**\n     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n     *\n     * See {setApprovalForAll}\n     */\n    function isApprovedForAll(address owner, address operator)\n    external\n    view\n    returns (bool);\n}\n\n// File: @openzeppelin/contracts/utils/Context.sol\n\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n    function _msgSender() internal view virtual returns (address) {\n        return msg.sender;\n    }\n\n    function _msgData() internal view virtual returns (bytes calldata) {\n        return msg.data;\n    }\n}\n\n// File: @openzeppelin/contracts/access/Ownable.sol\n\n// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\nabstract contract Ownable is Context {\n    address private _owner;\n\n    event OwnershipTransferred(\n        address indexed previousOwner,\n        address indexed newOwner\n    );\n\n    /**\n     * @dev Initializes the contract setting the deployer as the initial owner.\n     */\n    constructor() {\n        _transferOwnership(_msgSender());\n    }\n\n    /**\n     * @dev Throws if called by any account other than the owner.\n     */\n    modifier onlyOwner() {\n        _checkOwner();\n        _;\n    }\n\n    /**\n     * @dev Returns the address of the current owner.\n     */\n    function owner() public view virtual returns (address) {\n        return _owner;\n    }\n\n    /**\n     * @dev Throws if the sender is not the owner.\n     */\n    function _checkOwner() internal view virtual {\n        require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n    }\n\n    /**\n     * @dev Leaves the contract without owner. It will not be possible to call\n     * `onlyOwner` functions anymore. Can only be called by the current owner.\n     *\n     * NOTE: Renouncing ownership will leave the contract without an owner,\n     * thereby removing any functionality that is only available to the owner.\n     */\n    function renounceOwnership() public virtual onlyOwner {\n        _transferOwnership(address(0));\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Can only be called by the current owner.\n     */\n    function transferOwnership(address newOwner) public virtual onlyOwner {\n        require(\n            newOwner != address(0),\n            \"Ownable: new owner is the zero address\"\n        );\n        _transferOwnership(newOwner);\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Internal function without access restriction.\n     */\n    function _transferOwnership(address newOwner) internal virtual {\n        address oldOwner = _owner;\n        _owner = newOwner;\n        emit OwnershipTransferred(oldOwner, newOwner);\n    }\n}\n\n// File: @openzeppelin/contracts/utils/StorageSlot.sol\n\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/StorageSlot.sol)\n// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Library for reading and writing primitive types to specific storage slots.\n *\n * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.\n * This library helps with reading and writing to such slots without the need for inline assembly.\n *\n * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.\n *\n * Example usage to set ERC1967 implementation slot:\n * ```solidity\n * contract ERC1967 {\n *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;\n *\n *     function _getImplementation() internal view returns (address) {\n *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;\n *     }\n *\n *     function _setImplementation(address newImplementation) internal {\n *         require(Address.isContract(newImplementation), \"ERC1967: new implementation is not a contract\");\n *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;\n *     }\n * }\n * ```\n *\n * _Available since v4.1 for `address`, `bool`, `bytes32`, `uint256`._\n * _Available since v4.9 for `string`, `bytes`._\n */\nlibrary StorageSlot {\n    struct AddressSlot {\n        address value;\n    }\n\n    struct BooleanSlot {\n        bool value;\n    }\n\n    struct Bytes32Slot {\n        bytes32 value;\n    }\n\n    struct Uint256Slot {\n        uint256 value;\n    }\n\n    struct StringSlot {\n        string value;\n    }\n\n    struct BytesSlot {\n        bytes value;\n    }\n\n    /**\n     * @dev Returns an `AddressSlot` with member `value` located at `slot`.\n     */\n    function getAddressSlot(bytes32 slot)\n    internal\n    pure\n    returns (AddressSlot storage r)\n    {\n        /// @solidity memory-safe-assembly\n        assembly {\n            r.slot := slot\n        }\n    }\n\n    /**\n     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.\n     */\n    function getBooleanSlot(bytes32 slot)\n    internal\n    pure\n    returns (BooleanSlot storage r)\n    {\n        /// @solidity memory-safe-assembly\n        assembly {\n            r.slot := slot\n        }\n    }\n\n    /**\n     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.\n     */\n    function getBytes32Slot(bytes32 slot)\n    internal\n    pure\n    returns (Bytes32Slot storage r)\n    {\n        /// @solidity memory-safe-assembly\n        assembly {\n            r.slot := slot\n        }\n    }\n\n    /**\n     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.\n     */\n    function getUint256Slot(bytes32 slot)\n    internal\n    pure\n    returns (Uint256Slot storage r)\n    {\n        /// @solidity memory-safe-assembly\n        assembly {\n            r.slot := slot\n        }\n    }\n\n    /**\n     * @dev Returns an `StringSlot` with member `value` located at `slot`.\n     */\n    function getStringSlot(bytes32 slot)\n    internal\n    pure\n    returns (StringSlot storage r)\n    {\n        /// @solidity memory-safe-assembly\n        assembly {\n            r.slot := slot\n        }\n    }\n\n    /**\n     * @dev Returns an `StringSlot` representation of the string storage pointer `store`.\n     */\n    function getStringSlot(string storage store)\n    internal\n    pure\n    returns (StringSlot storage r)\n    {\n        /// @solidity memory-safe-assembly\n        assembly {\n            r.slot := store.slot\n        }\n    }\n\n    /**\n     * @dev Returns an `BytesSlot` with member `value` located at `slot`.\n     */\n    function getBytesSlot(bytes32 slot)\n    internal\n    pure\n    returns (BytesSlot storage r)\n    {\n        /// @solidity memory-safe-assembly\n        assembly {\n            r.slot := slot\n        }\n    }\n\n    /**\n     * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.\n     */\n    function getBytesSlot(bytes storage store)\n    internal\n    pure\n    returns (BytesSlot storage r)\n    {\n        /// @solidity memory-safe-assembly\n        assembly {\n            r.slot := store.slot\n        }\n    }\n}\n\n// File: @openzeppelin/contracts/utils/Address.sol\n\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n    /**\n     * @dev Returns true if `account` is a contract.\n     *\n     * [IMPORTANT]\n     * ====\n     * It is unsafe to assume that an address for which this function returns\n     * false is an externally-owned account (EOA) and not a contract.\n     *\n     * Among others, `isContract` will return false for the following\n     * types of addresses:\n     *\n     *  - an externally-owned account\n     *  - a contract in construction\n     *  - an address where a contract will be created\n     *  - an address where a contract lived, but was destroyed\n     *\n     * Furthermore, `isContract` will also return true if the target contract within\n     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,\n     * which only has an effect at the end of a transaction.\n     * ====\n     *\n     * [IMPORTANT]\n     * ====\n     * You shouldn't rely on `isContract` to protect against flash loan attacks!\n     *\n     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n     * constructor.\n     * ====\n     */\n    function isContract(address account) internal view returns (bool) {\n        // This method relies on extcodesize/address.code.length, which returns 0\n        // for contracts in construction, since the code is only stored at the end\n        // of the constructor execution.\n\n        return account.code.length > 0;\n    }\n\n    /**\n     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n     * `recipient`, forwarding all available gas and reverting on errors.\n     *\n     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n     * of certain opcodes, possibly making contracts go over the 2300 gas limit\n     * imposed by `transfer`, making them unable to receive funds via\n     * `transfer`. {sendValue} removes this limitation.\n     *\n     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n     *\n     * IMPORTANT: because control is transferred to `recipient`, care must be\n     * taken to not create reentrancy vulnerabilities. Consider using\n     * {ReentrancyGuard} or the\n     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n     */\n    function sendValue(address payable recipient, uint256 amount) internal {\n        require(\n            address(this).balance >= amount,\n            \"Address: insufficient balance\"\n        );\n\n        (bool success, ) = recipient.call{value: amount}(\"\");\n        require(\n            success,\n            \"Address: unable to send value, recipient may have reverted\"\n        );\n    }\n\n    /**\n     * @dev Performs a Solidity function call using a low level `call`. A\n     * plain `call` is an unsafe replacement for a function call: use this\n     * function instead.\n     *\n     * If `target` reverts with a revert reason, it is bubbled up by this\n     * function (like regular Solidity function calls).\n     *\n     * Returns the raw returned data. To convert to the expected return value,\n     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n     *\n     * Requirements:\n     *\n     * - `target` must be a contract.\n     * - calling `target` with `data` must not revert.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(address target, bytes memory data)\n    internal\n    returns (bytes memory)\n    {\n        return\n        functionCallWithValue(\n            target,\n            data,\n            0,\n            \"Address: low-level call failed\"\n        );\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n     * `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, 0, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but also transferring `value` wei to `target`.\n     *\n     * Requirements:\n     *\n     * - the calling contract must have an ETH balance of at least `value`.\n     * - the called Solidity function must be `payable`.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value\n    ) internal returns (bytes memory) {\n        return\n        functionCallWithValue(\n            target,\n            data,\n            value,\n            \"Address: low-level call with value failed\"\n        );\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n     * with `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        require(\n            address(this).balance >= value,\n            \"Address: insufficient balance for call\"\n        );\n        (bool success, bytes memory returndata) = target.call{value: value}(\n            data\n        );\n        return\n        verifyCallResultFromTarget(\n            target,\n            success,\n            returndata,\n            errorMessage\n        );\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(address target, bytes memory data)\n    internal\n    view\n    returns (bytes memory)\n    {\n        return\n        functionStaticCall(\n            target,\n            data,\n            \"Address: low-level static call failed\"\n        );\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal view returns (bytes memory) {\n        (bool success, bytes memory returndata) = target.staticcall(data);\n        return\n        verifyCallResultFromTarget(\n            target,\n            success,\n            returndata,\n            errorMessage\n        );\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(address target, bytes memory data)\n    internal\n    returns (bytes memory)\n    {\n        return\n        functionDelegateCall(\n            target,\n            data,\n            \"Address: low-level delegate call failed\"\n        );\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        (bool success, bytes memory returndata) = target.delegatecall(data);\n        return\n        verifyCallResultFromTarget(\n            target,\n            success,\n            returndata,\n            errorMessage\n        );\n    }\n\n    /**\n     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling\n     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.\n     *\n     * _Available since v4.8._\n     */\n    function verifyCallResultFromTarget(\n        address target,\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) internal view returns (bytes memory) {\n        if (success) {\n            if (returndata.length == 0) {\n                // only check isContract if the call was successful and the return data is empty\n                // otherwise we already know that it was a contract\n                require(isContract(target), \"Address: call to non-contract\");\n            }\n            return returndata;\n        } else {\n            _revert(returndata, errorMessage);\n        }\n    }\n\n    /**\n     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the\n     * revert reason or using the provided one.\n     *\n     * _Available since v4.3._\n     */\n    function verifyCallResult(\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) internal pure returns (bytes memory) {\n        if (success) {\n            return returndata;\n        } else {\n            _revert(returndata, errorMessage);\n        }\n    }\n\n    function _revert(bytes memory returndata, string memory errorMessage)\n    private\n    pure\n    {\n        // Look for revert reason and bubble it up if present\n        if (returndata.length > 0) {\n            // The easiest way to bubble the revert reason is using memory via assembly\n            /// @solidity memory-safe-assembly\n            assembly {\n                let returndata_size := mload(returndata)\n                revert(add(32, returndata), returndata_size)\n            }\n        } else {\n            revert(errorMessage);\n        }\n    }\n}\n\n// File: @openzeppelin/contracts/interfaces/draft-IERC1822.sol\n\n// OpenZeppelin Contracts (last updated v4.5.0) (interfaces/draft-IERC1822.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified\n * proxy whose upgrades are fully controlled by the current implementation.\n */\ninterface IERC1822Proxiable {\n    /**\n     * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation\n     * address.\n     *\n     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks\n     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this\n     * function revert if invoked through a proxy.\n     */\n    function proxiableUUID() external view returns (bytes32);\n}\n\n// File: @openzeppelin/contracts/interfaces/IERC1967.sol\n\n// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC1967.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev ERC-1967: Proxy Storage Slots. This interface contains the events defined in the ERC.\n *\n * _Available since v4.8.3._\n */\ninterface IERC1967 {\n    /**\n     * @dev Emitted when the implementation is upgraded.\n     */\n    event Upgraded(address indexed implementation);\n\n    /**\n     * @dev Emitted when the admin account has changed.\n     */\n    event AdminChanged(address previousAdmin, address newAdmin);\n\n    /**\n     * @dev Emitted when the beacon is changed.\n     */\n    event BeaconUpgraded(address indexed beacon);\n}\n\n// File: @openzeppelin/contracts/proxy/beacon/IBeacon.sol\n\n// OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev This is the interface that {BeaconProxy} expects of its beacon.\n */\ninterface IBeacon {\n    /**\n     * @dev Must return an address that can be used as a delegate call target.\n     *\n     * {BeaconProxy} will check that this address is a contract.\n     */\n    function implementation() external view returns (address);\n}\n\n// File: @openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol\n\n// OpenZeppelin Contracts (last updated v4.9.0) (proxy/ERC1967/ERC1967Upgrade.sol)\n\npragma solidity ^0.8.2;\n\n/**\n * @dev This abstract contract provides getters and event emitting update functions for\n * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.\n *\n * _Available since v4.1._\n */\nabstract contract ERC1967Upgrade is IERC1967 {\n    // This is the keccak-256 hash of \"eip1967.proxy.rollback\" subtracted by 1\n    bytes32 private constant _ROLLBACK_SLOT =\n    0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;\n\n    /**\n     * @dev Storage slot with the address of the current implementation.\n     * This is the keccak-256 hash of \"eip1967.proxy.implementation\" subtracted by 1, and is\n     * validated in the constructor.\n     */\n    bytes32 internal constant _IMPLEMENTATION_SLOT =\n    0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;\n\n    /**\n     * @dev Returns the current implementation address.\n     */\n    function _getImplementation() internal view returns (address) {\n        return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;\n    }\n\n    /**\n     * @dev Stores a new address in the EIP1967 implementation slot.\n     */\n    function _setImplementation(address newImplementation) private {\n        require(\n            Address.isContract(newImplementation),\n            \"ERC1967: new implementation is not a contract\"\n        );\n        StorageSlot\n        .getAddressSlot(_IMPLEMENTATION_SLOT)\n        .value = newImplementation;\n    }\n\n    /**\n     * @dev Perform implementation upgrade\n     *\n     * Emits an {Upgraded} event.\n     */\n    function _upgradeTo(address newImplementation) internal {\n        _setImplementation(newImplementation);\n        emit Upgraded(newImplementation);\n    }\n\n    /**\n     * @dev Perform implementation upgrade with additional setup call.\n     *\n     * Emits an {Upgraded} event.\n     */\n    function _upgradeToAndCall(\n        address newImplementation,\n        bytes memory data,\n        bool forceCall\n    ) internal {\n        _upgradeTo(newImplementation);\n        if (data.length > 0 || forceCall) {\n            Address.functionDelegateCall(newImplementation, data);\n        }\n    }\n\n    /**\n     * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.\n     *\n     * Emits an {Upgraded} event.\n     */\n    function _upgradeToAndCallUUPS(\n        address newImplementation,\n        bytes memory data,\n        bool forceCall\n    ) internal {\n        // Upgrades from old implementations will perform a rollback test. This test requires the new\n        // implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing\n        // this special case will break upgrade paths from old UUPS implementation to new ones.\n        if (StorageSlot.getBooleanSlot(_ROLLBACK_SLOT).value) {\n            _setImplementation(newImplementation);\n        } else {\n            try IERC1822Proxiable(newImplementation).proxiableUUID() returns (\n                bytes32 slot\n            ) {\n                require(\n                    slot == _IMPLEMENTATION_SLOT,\n                    \"ERC1967Upgrade: unsupported proxiableUUID\"\n                );\n            } catch {\n                revert(\"ERC1967Upgrade: new implementation is not UUPS\");\n            }\n            _upgradeToAndCall(newImplementation, data, forceCall);\n        }\n    }\n\n    /**\n     * @dev Storage slot with the admin of the contract.\n     * This is the keccak-256 hash of \"eip1967.proxy.admin\" subtracted by 1, and is\n     * validated in the constructor.\n     */\n    bytes32 internal constant _ADMIN_SLOT =\n    0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;\n\n    /**\n     * @dev Returns the current admin.\n     */\n    function _getAdmin() internal view returns (address) {\n        return StorageSlot.getAddressSlot(_ADMIN_SLOT).value;\n    }\n\n    /**\n     * @dev Stores a new address in the EIP1967 admin slot.\n     */\n    function _setAdmin(address newAdmin) private {\n        require(\n            newAdmin != address(0),\n            \"ERC1967: new admin is the zero address\"\n        );\n        StorageSlot.getAddressSlot(_ADMIN_SLOT).value = newAdmin;\n    }\n\n    /**\n     * @dev Changes the admin of the proxy.\n     *\n     * Emits an {AdminChanged} event.\n     */\n    function _changeAdmin(address newAdmin) internal {\n        emit AdminChanged(_getAdmin(), newAdmin);\n        _setAdmin(newAdmin);\n    }\n\n    /**\n     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.\n     * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.\n     */\n    bytes32 internal constant _BEACON_SLOT =\n    0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;\n\n    /**\n     * @dev Returns the current beacon.\n     */\n    function _getBeacon() internal view returns (address) {\n        return StorageSlot.getAddressSlot(_BEACON_SLOT).value;\n    }\n\n    /**\n     * @dev Stores a new beacon in the EIP1967 beacon slot.\n     */\n    function _setBeacon(address newBeacon) private {\n        require(\n            Address.isContract(newBeacon),\n            \"ERC1967: new beacon is not a contract\"\n        );\n        require(\n            Address.isContract(IBeacon(newBeacon).implementation()),\n            \"ERC1967: beacon implementation is not a contract\"\n        );\n        StorageSlot.getAddressSlot(_BEACON_SLOT).value = newBeacon;\n    }\n\n    /**\n     * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does\n     * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).\n     *\n     * Emits a {BeaconUpgraded} event.\n     */\n    function _upgradeBeaconToAndCall(\n        address newBeacon,\n        bytes memory data,\n        bool forceCall\n    ) internal {\n        _setBeacon(newBeacon);\n        emit BeaconUpgraded(newBeacon);\n        if (data.length > 0 || forceCall) {\n            Address.functionDelegateCall(\n                IBeacon(newBeacon).implementation(),\n                data\n            );\n        }\n    }\n}\n\n// File: @openzeppelin/contracts/proxy/Proxy.sol\n\n// OpenZeppelin Contracts (last updated v4.6.0) (proxy/Proxy.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM\n * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to\n * be specified by overriding the virtual {_implementation} function.\n *\n * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a\n * different contract through the {_delegate} function.\n *\n * The success and return data of the delegated call will be returned back to the caller of the proxy.\n */\nabstract contract Proxy {\n    /**\n     * @dev Delegates the current call to `implementation`.\n     *\n     * This function does not return to its internal call site, it will return directly to the external caller.\n     */\n    function _delegate(address implementation) internal virtual {\n        assembly {\n        // Copy msg.data. We take full control of memory in this inline assembly\n        // block because it will not return to Solidity code. We overwrite the\n        // Solidity scratch pad at memory position 0.\n            calldatacopy(0, 0, calldatasize())\n\n        // Call the implementation.\n        // out and outsize are 0 because we don't know the size yet.\n            let result := delegatecall(\n            gas(),\n            implementation,\n            0,\n            calldatasize(),\n            0,\n            0\n            )\n\n        // Copy the returned data.\n            returndatacopy(0, 0, returndatasize())\n\n            switch result\n            // delegatecall returns 0 on error.\n            case 0 {\n                revert(0, returndatasize())\n            }\n            default {\n                return(0, returndatasize())\n            }\n        }\n    }\n\n    /**\n     * @dev This is a virtual function that should be overridden so it returns the address to which the fallback function\n     * and {_fallback} should delegate.\n     */\n    function _implementation() internal view virtual returns (address);\n\n    /**\n     * @dev Delegates the current call to the address returned by `_implementation()`.\n     *\n     * This function does not return to its internal call site, it will return directly to the external caller.\n     */\n    function _fallback() internal virtual {\n        _beforeFallback();\n        _delegate(_implementation());\n    }\n\n    /**\n     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other\n     * function in the contract matches the call data.\n     */\n    fallback() external payable virtual {\n        _fallback();\n    }\n\n    /**\n     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data\n     * is empty.\n     */\n    receive() external payable virtual {\n        _fallback();\n    }\n\n    /**\n     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`\n     * call, or as part of the Solidity `fallback` or `receive` functions.\n     *\n     * If overridden should call `super._beforeFallback()`.\n     */\n    function _beforeFallback() internal virtual {}\n}\n\n// File: @openzeppelin/contracts/proxy/ERC1967/ERC1967Proxy.sol\n\n// OpenZeppelin Contracts (last updated v4.7.0) (proxy/ERC1967/ERC1967Proxy.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an\n * implementation address that can be changed. This address is stored in storage in the location specified by\n * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the\n * implementation behind the proxy.\n */\ncontract ERC1967Proxy is Proxy, ERC1967Upgrade {\n    /**\n     * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.\n     *\n     * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded\n     * function call, and allows initializing the storage of the proxy like a Solidity constructor.\n     */\n    constructor(address _logic, bytes memory _data) payable {\n        _upgradeToAndCall(_logic, _data, false);\n    }\n\n    /**\n     * @dev Returns the current implementation address.\n     */\n    function _implementation()\n    internal\n    view\n    virtual\n    override\n    returns (address impl)\n    {\n        return ERC1967Upgrade._getImplementation();\n    }\n}\n\n// File: @openzeppelin/contracts/proxy/transparent/TransparentUpgradeableProxy.sol\n\n// OpenZeppelin Contracts (last updated v4.9.0) (proxy/transparent/TransparentUpgradeableProxy.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface for {TransparentUpgradeableProxy}. In order to implement transparency, {TransparentUpgradeableProxy}\n * does not implement this interface directly, and some of its functions are implemented by an internal dispatch\n * mechanism. The compiler is unaware that these functions are implemented by {TransparentUpgradeableProxy} and will not\n * include them in the ABI so this interface must be used to interact with it.\n */\ninterface ITransparentUpgradeableProxy is IERC1967 {\n    function admin() external view returns (address);\n\n    function implementation() external view returns (address);\n\n    function changeAdmin(address) external;\n\n    function upgradeTo(address) external;\n\n    function upgradeToAndCall(address, bytes memory) external payable;\n}\n\n/**\n * @dev This contract implements a proxy that is upgradeable by an admin.\n *\n * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector\n * clashing], which can potentially be used in an attack, this contract uses the\n * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two\n * things that go hand in hand:\n *\n * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if\n * that call matches one of the admin functions exposed by the proxy itself.\n * 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the\n * implementation. If the admin tries to call a function on the implementation it will fail with an error that says\n * \"admin cannot fallback to proxy target\".\n *\n * These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing\n * the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due\n * to sudden errors when trying to call a function from the proxy implementation.\n *\n * Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,\n * you should think of the `ProxyAdmin` instance as the real administrative interface of your proxy.\n *\n * NOTE: The real interface of this proxy is that defined in `ITransparentUpgradeableProxy`. This contract does not\n * inherit from that interface, and instead the admin functions are implicitly implemented using a custom dispatch\n * mechanism in `_fallback`. Consequently, the compiler will not produce an ABI for this contract. This is necessary to\n * fully implement transparency without decoding reverts caused by selector clashes between the proxy and the\n * implementation.\n *\n * WARNING: It is not recommended to extend this contract to add additional external functions. If you do so, the compiler\n * will not check that there are no selector conflicts, due to the note above. A selector clash between any new function\n * and the functions declared in {ITransparentUpgradeableProxy} will be resolved in favor of the new one. This could\n * render the admin operations inaccessible, which could prevent upgradeability. Transparency may also be compromised.\n */\ncontract TransparentUpgradeableProxy is ERC1967Proxy {\n    /**\n     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and\n     * optionally initialized with `_data` as explained in {ERC1967Proxy-constructor}.\n     */\n    constructor(\n        address _logic,\n        address admin_,\n        bytes memory _data\n    ) payable ERC1967Proxy(_logic, _data) {\n        _changeAdmin(admin_);\n    }\n\n    /**\n     * @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.\n     *\n     * CAUTION: This modifier is deprecated, as it could cause issues if the modified function has arguments, and the\n     * implementation provides a function with the same selector.\n     */\n    modifier ifAdmin() {\n        if (msg.sender == _getAdmin()) {\n            _;\n        } else {\n            _fallback();\n        }\n    }\n\n    /**\n     * @dev If caller is the admin process the call internally, otherwise transparently fallback to the proxy behavior\n     */\n    function _fallback() internal virtual override {\n        if (msg.sender == _getAdmin()) {\n            bytes memory ret;\n            bytes4 selector = msg.sig;\n            if (selector == ITransparentUpgradeableProxy.upgradeTo.selector) {\n                ret = _dispatchUpgradeTo();\n            } else if (\n                selector ==\n                ITransparentUpgradeableProxy.upgradeToAndCall.selector\n            ) {\n                ret = _dispatchUpgradeToAndCall();\n            } else if (\n                selector == ITransparentUpgradeableProxy.changeAdmin.selector\n            ) {\n                ret = _dispatchChangeAdmin();\n            } else if (\n                selector == ITransparentUpgradeableProxy.admin.selector\n            ) {\n                ret = _dispatchAdmin();\n            } else if (\n                selector == ITransparentUpgradeableProxy.implementation.selector\n            ) {\n                ret = _dispatchImplementation();\n            } else {\n                revert(\n                \"TransparentUpgradeableProxy: admin cannot fallback to proxy target\"\n                );\n            }\n            assembly {\n                return(add(ret, 0x20), mload(ret))\n            }\n        } else {\n            super._fallback();\n        }\n    }\n\n    /**\n     * @dev Returns the current admin.\n     *\n     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the\n     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.\n     * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`\n     */\n    function _dispatchAdmin() private returns (bytes memory) {\n        _requireZeroValue();\n\n        address admin = _getAdmin();\n        return abi.encode(admin);\n    }\n\n    /**\n     * @dev Returns the current implementation.\n     *\n     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the\n     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.\n     * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`\n     */\n    function _dispatchImplementation() private returns (bytes memory) {\n        _requireZeroValue();\n\n        address implementation = _implementation();\n        return abi.encode(implementation);\n    }\n\n    /**\n     * @dev Changes the admin of the proxy.\n     *\n     * Emits an {AdminChanged} event.\n     */\n    function _dispatchChangeAdmin() private returns (bytes memory) {\n        _requireZeroValue();\n\n        address newAdmin = abi.decode(msg.data[4:], (address));\n        _changeAdmin(newAdmin);\n\n        return \"\";\n    }\n\n    /**\n     * @dev Upgrade the implementation of the proxy.\n     */\n    function _dispatchUpgradeTo() private returns (bytes memory) {\n        _requireZeroValue();\n\n        address newImplementation = abi.decode(msg.data[4:], (address));\n        _upgradeToAndCall(newImplementation, bytes(\"\"), false);\n\n        return \"\";\n    }\n\n    /**\n     * @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified\n     * by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the\n     * proxied contract.\n     */\n    function _dispatchUpgradeToAndCall() private returns (bytes memory) {\n        (address newImplementation, bytes memory data) = abi.decode(\n            msg.data[4:],\n            (address, bytes)\n        );\n        _upgradeToAndCall(newImplementation, data, true);\n\n        return \"\";\n    }\n\n    /**\n     * @dev Returns the current admin.\n     *\n     * CAUTION: This function is deprecated. Use {ERC1967Upgrade-_getAdmin} instead.\n     */\n    function _admin() internal view virtual returns (address) {\n        return _getAdmin();\n    }\n\n    /**\n     * @dev To keep this contract fully transparent, all `ifAdmin` functions must be payable. This helper is here to\n     * emulate some proxy functions being non-payable while still allowing value to pass through.\n     */\n    function _requireZeroValue() private {\n        require(msg.value == 0);\n    }\n}\n\n// File: @openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol\n\n// OpenZeppelin Contracts (last updated v4.8.3) (proxy/transparent/ProxyAdmin.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev This is an auxiliary contract meant to be assigned as the admin of a {TransparentUpgradeableProxy}. For an\n * explanation of why you would want to use this see the documentation for {TransparentUpgradeableProxy}.\n */\ncontract ProxyAdmin is Ownable {\n    /**\n     * @dev Returns the current implementation of `proxy`.\n     *\n     * Requirements:\n     *\n     * - This contract must be the admin of `proxy`.\n     */\n    function getProxyImplementation(ITransparentUpgradeableProxy proxy)\n    public\n    view\n    virtual\n    returns (address)\n    {\n        // We need to manually run the static call since the getter cannot be flagged as view\n        // bytes4(keccak256(\"implementation()\")) == 0x5c60da1b\n        (bool success, bytes memory returndata) = address(proxy).staticcall(\n            hex\"5c60da1b\"\n        );\n        require(success);\n        return abi.decode(returndata, (address));\n    }\n\n    /**\n     * @dev Returns the current admin of `proxy`.\n     *\n     * Requirements:\n     *\n     * - This contract must be the admin of `proxy`.\n     */\n    function getProxyAdmin(ITransparentUpgradeableProxy proxy)\n    public\n    view\n    virtual\n    returns (address)\n    {\n        // We need to manually run the static call since the getter cannot be flagged as view\n        // bytes4(keccak256(\"admin()\")) == 0xf851a440\n        (bool success, bytes memory returndata) = address(proxy).staticcall(\n            hex\"f851a440\"\n        );\n        require(success);\n        return abi.decode(returndata, (address));\n    }\n\n    /**\n     * @dev Changes the admin of `proxy` to `newAdmin`.\n     *\n     * Requirements:\n     *\n     * - This contract must be the current admin of `proxy`.\n     */\n    function changeProxyAdmin(\n        ITransparentUpgradeableProxy proxy,\n        address newAdmin\n    ) public virtual onlyOwner {\n        proxy.changeAdmin(newAdmin);\n    }\n\n    /**\n     * @dev Upgrades `proxy` to `implementation`. See {TransparentUpgradeableProxy-upgradeTo}.\n     *\n     * Requirements:\n     *\n     * - This contract must be the admin of `proxy`.\n     */\n    function upgrade(ITransparentUpgradeableProxy proxy, address implementation)\n    public\n    virtual\n    onlyOwner\n    {\n        proxy.upgradeTo(implementation);\n    }\n\n    /**\n     * @dev Upgrades `proxy` to `implementation` and calls a function on the new implementation. See\n     * {TransparentUpgradeableProxy-upgradeToAndCall}.\n     *\n     * Requirements:\n     *\n     * - This contract must be the admin of `proxy`.\n     */\n    function upgradeAndCall(\n        ITransparentUpgradeableProxy proxy,\n        address implementation,\n        bytes memory data\n    ) public payable virtual onlyOwner {\n        proxy.upgradeToAndCall{value: msg.value}(implementation, data);\n    }\n}\n\n// pragma solidity ^0.8.18;\n\npragma solidity ^0.8.18;\n\ncontract HashWar is ERC721x {\n\n    enum Rarity {\n        None,\n        Legendary,\n        Epic,\n        Rare,\n        Common\n    }\n\n    struct TokenRarity {\n        uint256 tokenID;\n        uint256 revealBlock;\n    }\n\n    string public prefixURI;\n    uint256 public mintPrice;\n    uint256 public maxSupply;\n    uint256 public revealDelayed;\n    bool public enableUnStake;\n    bool public enableMint;\n\n    mapping(uint256 => TokenRarity) public tokenRarity;\n\n    // ================= V2 ======================\n\n    mapping(uint256 => uint256) public tokensLastStakedAt; // tokenId => timestamp\n\n    event Stake(uint256 tokenId, address by, uint256 stakedAt);\n    event Unstake(\n        uint256 tokenId,\n        address by,\n        uint256 stakedAt,\n        uint256 unstakedAt\n    );\n\n    function initialize()\n    public\n    initializerERC721A\n    initializer\n    {\n        __ERC721x_init(\"Hash War\", \"hawa\");\n\n        prefixURI = \"https://prod.api.hawahash.xyz/gateway/token/\";\n\n        mintPrice = 0.01 ether;\n        maxSupply = 10000;\n        revealDelayed = 1;\n        enableUnStake = false;\n        approvedContract[address(this)] = true;\n        enableMint = true;\n    }\n\n    function mint(uint256 count) public payable {\n        require(enableMint && count > 0);\n        require(totalSupply() + count <= maxSupply, \"sold out\");\n        require(msg.value >= mintPrice * count, \"insufficient value\");\n\n        uint256 currentTokenID = totalSupply() + 1;\n        safeMint(msg.sender, count);\n\n        for (uint256 i = 0; i < count;) {\n            tokenRarity[currentTokenID] = TokenRarity(\n                currentTokenID,\n                block.number + revealDelayed\n            );\n\n        unchecked {\n            currentTokenID++;\n            i++;\n        }\n        }\n    }\n\n    function safeMint(address receiver, uint256 quantity) internal {\n        _mint(receiver, quantity);\n    }\n\n    function calcRarity(uint256 tokenID, bytes32 blockHash)\n    internal\n    pure\n    returns (Rarity, uint256[5] memory)\n    {\n\n        uint256 score = 0;\n        uint256[5] memory randScores;\n\n        for (uint i = 0; i < 5;)\n        {\n        unchecked{\n            uint256 randN = uint256(\n                keccak256(abi.encodePacked(tokenID,i, blockHash))\n            ) % 10000;\n\n            score += randN;\n            randScores[i] = randN;\n            i++;\n        }\n        }\n\n\n        if (score >= 36305) {\n            return (Rarity.Legendary,randScores);\n        } else if (score >= 30573) {\n            return (Rarity.Epic,randScores);\n        } else if (score >= 23313) {\n            return (Rarity.Rare,randScores);\n        } else {\n            return (Rarity.Common,randScores);\n        }\n    }\n\n    function analyzeRarity(uint256 tokenID, bytes32 blockHash)\n    public\n    view\n    returns (Rarity, uint256[5] memory randScores)\n    {\n        require(_exists(tokenID), \"Token Not Exist\");\n        require(\n            block.number > tokenRarity[tokenID].revealBlock,\n            \"Token Not Revealed\"\n        );\n\n        return calcRarity(tokenID, blockHash);\n    }\n\n    // =============== MARKET ===============\n\n    function setMintStatus(bool _enable) external onlyOwner {\n        enableMint = _enable;\n    }\n\n    function setStakeStatus(bool _enable) external onlyOwner {\n        enableUnStake = _enable;\n    }\n\n    function stake(uint256 tokenId) public {\n        require(msg.sender == ownerOf(tokenId));\n        require(tokensLastStakedAt[tokenId] == 0 && isUnlocked(tokenId), \"already staking\");\n        tokensLastStakedAt[tokenId] = block.timestamp;\n        emit Stake(tokenId, msg.sender, tokensLastStakedAt[tokenId]);\n    }\n\n    function unstake(uint256 tokenId) public {\n        require(msg.sender == ownerOf(tokenId));\n        require(tokensLastStakedAt[tokenId] > 0 || !isUnlocked(tokenId), \"not staking\");\n\n        if (!isUnlocked(tokenId)) {\n            IERC721x(address(this)).unlockId(tokenId);\n        }\n\n        uint256 lsa = tokensLastStakedAt[tokenId];\n        tokensLastStakedAt[tokenId] = 0;\n        emit Unstake(tokenId, msg.sender, lsa, block.timestamp);\n    }\n\n\n    function lockIds(uint256[] memory _ids) external {\n        for (uint256 i = 0; i < _ids.length;) {\n            stake(_ids[i]);\n\n        unchecked {\n            i++;\n        }\n        }\n    }\n\n    function unlockIds(uint256[] memory _ids) external{\n        require(enableUnStake, \"Unstake Disabled\");\n        for (uint256 i = 0; i < _ids.length;) {\n            unstake(_ids[i]);\n\n        unchecked {\n            i++;\n        }\n        }\n    }\n\n    function transferFrom(\n        address from,\n        address to,\n        uint256 tokenId\n    ) public payable override(ERC721x) {\n        require(\n            tokensLastStakedAt[tokenId] == 0 && isUnlocked(tokenId),\n            \"Cannot transfer staked token\"\n        );\n        super.transferFrom(from, to, tokenId);\n    }\n\n    function safeTransferFrom(\n        address from,\n        address to,\n        uint256 tokenId,\n        bytes memory _data\n    ) public payable override(ERC721x) {\n        require(\n            tokensLastStakedAt[tokenId] == 0 && isUnlocked(tokenId),\n            \"Cannot transfer staked token\"\n        );\n        super.safeTransferFrom(from, to, tokenId, _data);\n    }\n\n    // =============== URI ===============\n\n    function _startTokenId() internal view virtual override returns (uint256) {\n        return 1;\n    }\n\n    function _baseURI() internal view virtual override returns (string memory) {\n        return prefixURI;\n    }\n\n    function tokenURI(uint256 _tokenId)\n    public\n    view\n    override\n    returns (string memory)\n    {\n        require(_exists(_tokenId), \"TOKEN NOT EXIST\");\n        return string.concat(super.tokenURI(_tokenId), \"\");\n    }\n\n    function setBaseURI(string calldata _prefixURI) external onlyOwner {\n        prefixURI = _prefixURI;\n    }\n\n    function withdraw() external onlyOwner {\n        uint256 sendAmount = address(this).balance;\n\n        address h = payable(msg.sender);\n\n        bool success;\n\n        (success, ) = h.call{value: sendAmount}(\"\");\n        require(success, \"Transaction Unsuccessful\");\n    }\n}\n"
      }
    },
    "settings": {
      "optimizer": {
        "enabled": true,
        "runs": 200
      },
      "evmVersion": "paris",
      "outputSelection": {
        "*": {
          "*": [
            "evm.bytecode",
            "evm.deployedBytecode",
            "devdoc",
            "userdoc",
            "metadata",
            "abi"
          ]
        }
      },
      "libraries": {}
    }
  }}