creation_sourcecode: /**
  TG: t.me/nvidiacloudai
  X/Twitter: x.com/nvidiacloudai
  Web: nvidiacloud.ai
  Docs: docs.nvidiacloud.ai
  */
  // SPDX-License-Identifier: MIT
  
  pragma solidity 0.8.20;
  
  abstract contract Context {
      function _msgSender() internal view virtual returns (address) {
          return msg.sender;
      }
  
      function _msgData() internal view virtual returns (bytes calldata) {
          this;
          return msg.data;
      }
  }
  
  interface IERC20 {
      function totalSupply() external view returns (uint256);
  
      function balanceOf(address account) external view returns (uint256);
  
      function transfer(address recipient, uint256 amount)
          external
          returns (bool);
  
      function allowance(address owner, address spender)
          external
          view
          returns (uint256);
  
      function approve(address spender, uint256 amount) external returns (bool);
  
      function transferFrom(
          address sender,
          address recipient,
          uint256 amount
      ) external returns (bool);
  
      event Transfer(address indexed from, address indexed to, uint256 value);
  
      event Approval(
          address indexed owner,
          address indexed spender,
          uint256 value
      );
  }
  
  interface IERC20Metadata is IERC20 {
      function name() external view returns (string memory);
  
      function symbol() external view returns (string memory);
  
      function decimals() external view returns (uint8);
  }
  
  contract ERC20 is Context, IERC20, IERC20Metadata {
      mapping(address => uint256) internal _balances;
  
      mapping(address => mapping(address => uint256)) internal _allowances;
  
      uint256 private _totalSupply;
  
      string private _name;
      string private _symbol;
  
      constructor(string memory name_, string memory symbol_) {
          _name = name_;
          _symbol = symbol_;
      }
  
      function name() public view virtual override returns (string memory) {
          return _name;
      }
  
      function symbol() public view virtual override returns (string memory) {
          return _symbol;
      }
  
      function decimals() public view virtual override returns (uint8) {
          return 18;
      }
  
      function totalSupply() public view virtual override returns (uint256) {
          return _totalSupply;
      }
  
      function balanceOf(address account)
          public
          view
          virtual
          override
          returns (uint256)
      {
          return _balances[account];
      }
  
      function transfer(address recipient, uint256 amount)
          public
          virtual
          override
          returns (bool)
      {
          _transfer(_msgSender(), recipient, amount);
          return true;
      }
  
      function allowance(address owner, address spender)
          public
          view
          virtual
          override
          returns (uint256)
      {
          return _allowances[owner][spender];
      }
  
      function approve(address spender, uint256 amount)
          public
          virtual
          override
          returns (bool)
      {
          _approve(_msgSender(), spender, amount);
          return true;
      }
  
      function transferFrom(
          address sender,
          address recipient,
          uint256 amount
      ) public virtual override returns (bool) {
          _transfer(sender, recipient, amount);
  
          uint256 currentAllowance = _allowances[sender][_msgSender()];
          require(
              currentAllowance >= amount,
              "ERC20: transfer amount exceeds allowance"
          );
          _approve(sender, _msgSender(), currentAllowance - amount);
  
          return true;
      }
  
      function increaseAllowance(address spender, uint256 addedValue)
          public
          virtual
          returns (bool)
      {
          _approve(
              _msgSender(),
              spender,
              _allowances[_msgSender()][spender] + addedValue
          );
          return true;
      }
  
      function decreaseAllowance(address spender, uint256 subtractedValue)
          public
          virtual
          returns (bool)
      {
          uint256 currentAllowance = _allowances[_msgSender()][spender];
          require(
              currentAllowance >= subtractedValue,
              "ERC20: decreased allowance below zero"
          );
          _approve(_msgSender(), spender, currentAllowance - subtractedValue);
  
          return true;
      }
  
      function _transfer(
          address sender,
          address recipient,
          uint256 amount
      ) internal virtual {
          require(sender != address(0), "ERC20: transfer from the zero address");
          require(recipient != address(0), "ERC20: transfer to the zero address");
  
          _beforeTokenTransfer(sender, recipient, amount);
  
          uint256 senderBalance = _balances[sender];
          require(
              senderBalance >= amount,
              "ERC20: transfer amount exceeds balance"
          );
          _balances[sender] = senderBalance - amount;
          _balances[recipient] += amount;
  
          emit Transfer(sender, recipient, amount);
      }
  
      function _mint(address account, uint256 amount) internal virtual {
          require(account != address(0), "ERC20: mint to the zero address");
  
          _beforeTokenTransfer(address(0), account, amount);
  
          _totalSupply += amount;
          _balances[account] += amount;
          emit Transfer(address(0), account, amount);
      }
  
      function _approve(
          address owner,
          address spender,
          uint256 amount
      ) internal virtual {
          require(owner != address(0), "ERC20: approve from the zero address");
          require(spender != address(0), "ERC20: approve to the zero address");
  
          _allowances[owner][spender] = amount;
          emit Approval(owner, spender, amount);
      }
  
      function _beforeTokenTransfer(
          address from,
          address to,
          uint256 amount
      ) internal virtual {}
  }
  
  library Address {
      function sendValue(address payable recipient, uint256 amount) internal {
          require(
              address(this).balance >= amount,
              "Address: insufficient balance"
          );
  
          (bool success, ) = recipient.call{value: amount}("");
          require(
              success,
              "Address: unable to send value, recipient may have reverted"
          );
      }
  }
  
  abstract contract Ownable is Context {
      address private _owner;
  
      event OwnershipTransferred(
          address indexed previousOwner,
          address indexed newOwner
      );
  
      constructor() {
          _setOwner(_msgSender());
      }
  
      function owner() public view virtual returns (address) {
          return _owner;
      }
  
      modifier onlyOwner() {
          require(owner() == _msgSender(), "Ownable: caller is not the owner");
          _;
      }
  
      function renounceOwnership() public virtual onlyOwner {
          _setOwner(address(0));
      }
  
      function transferOwnership(address newOwner) public virtual onlyOwner {
          require(
              newOwner != address(0),
              "Ownable: new owner is the zero address"
          );
          _setOwner(newOwner);
      }
  
      function _setOwner(address newOwner) private {
          address oldOwner = _owner;
          _owner = newOwner;
          emit OwnershipTransferred(oldOwner, newOwner);
      }
  }
  
  interface IFactory {
      function createPair(address tokenA, address tokenB)
          external
          returns (address pair);
  }
  
  interface IRouter {
      function factory() external pure returns (address);
  
      function WETH() external pure returns (address);
  
      function addLiquidityETH(
          address token,
          uint256 amountTokenDesired,
          uint256 amountTokenMin,
          uint256 amountETHMin,
          address to,
          uint256 deadline
      )
          external
          payable
          returns (
              uint256 amountToken,
              uint256 amountETH,
              uint256 liquidity
          );
  
      function swapExactTokensForETHSupportingFeeOnTransferTokens(
          uint256 amountIn,
          uint256 amountOutMin,
          address[] calldata path,
          address to,
          uint256 deadline
      ) external;
  }
  
  contract NVIDIA is ERC20, Ownable {
      using Address for address payable;
  
      IRouter public router;
      address public pair;
  
      bool private swapping;
      bool public swapEnabled;
      bool public launched;
  
      modifier lockSwapping() {
          swapping = true;
          _;
          swapping = false;
      }
  
      event TransferForeignToken(address token, uint256 amount);
      event Launched();
      event SwapEnabled();
      event SwapThresholdUpdated();
      event BuyTaxesUpdated();
      event SellTaxesUpdated();
      event MarketingWalletUpdated();
      event DevelopmentWalletUpdated();
      event StoicDaoWalletUpdated();
      event ExcludedFromFeesUpdated();
      event MaxTxAmountUpdated();
      event MaxWalletAmountUpdated();
      event StuckEthersCleared();
  
      uint256 public transactionCount = 0; // Počet transakcií, ktoré prebehli
      uint256 public constant transactionThreshold = 25; // Prahová hodnota pre zmenu dane
  
      uint256 public constant TOTAL_SUPPLY = 1000000 * 10**18; // 1 milión tokenov
      uint256 public swapThreshold = (TOTAL_SUPPLY * 1) / 100; // 1% z celkovej ponuky tokenov
      uint256 public maxTxAmount = (TOTAL_SUPPLY * 2) / 100; // 2% z celkovej ponuky tokenov
      uint256 public maxWalletAmount = (TOTAL_SUPPLY * 8) / 100; // 8% z celkovej ponuky tokenov
  
  
      address public marketingWallet = 0xf67514DC19b0f6eBb2EE6bf93efCfEd69A4CD3e2;
  
      uint256 private initialBuyTax = 10; //10%
      uint256 private initialSellTax = 20; //20%
  
      uint256 private finalBuyTax = 5; //5%
      uint256 private finalSellTax = 5; //5%
  
      mapping(address => bool) public excludedFromFees;
  
      modifier inSwap() {
          if (!swapping) {
              swapping = true;
              _;
              swapping = false;
          }
      }
  
      constructor() ERC20("Nvidia Cloud AI", "NVIDIA") {
          _mint(msg.sender, TOTAL_SUPPLY);
          excludedFromFees[msg.sender] = true;
          IRouter _router = IRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
          address _pair = IFactory(_router.factory()).createPair(
              address(this),
              _router.WETH()
          );
  
          router = _router;
          pair = _pair;
          excludedFromFees[address(this)] = true;
          excludedFromFees[marketingWallet] = true;
      }
  
      function _transfer(
          address sender,
          address recipient,
          uint256 amount
      ) internal override {
          require(amount > 0, "Transfer amount must be greater than zero");
  
          if (
              !excludedFromFees[sender] &&
              !excludedFromFees[recipient] &&
              !swapping
          ) {
              if (sender != owner() && recipient != owner()) {
                  require(amount <= maxTxAmount, "You are exceeding maxTxAmount");
                  if (recipient != pair) {
                      require(
                          balanceOf(recipient) + amount <= maxWalletAmount,
                          "You are exceeding maxWalletAmount"
                      );
                  }
              }
          }
  
          uint256 fee;
  
          if (swapping || excludedFromFees[sender] || excludedFromFees[recipient])
              fee = 0;
          else {
              if (recipient == pair) {
                  fee =
                      (amount *
                          (
                              transactionCount < transactionThreshold
                                  ? initialSellTax
                                  : finalSellTax
                          )) /
                      100;
                  transactionCount++;
              } else if (sender == pair) {
                  fee =
                      (amount *
                          (
                              transactionCount < transactionThreshold
                                  ? initialBuyTax
                                  : finalBuyTax
                          )) /
                      100;
                  transactionCount++;
              } else {
                  fee = 0;
              }
          }
  
          if (swapEnabled && !swapping && sender != pair && fee > 0)
              swapForFees();
  
          super._transfer(sender, recipient, amount - fee);
          if (fee > 0) super._transfer(sender, address(this), fee);
      }
  
      function swapForFees() private inSwap {
          uint256 contractBalance = balanceOf(address(this));
  
          if (contractBalance >= swapThreshold) {
              swapTokensForETH(contractBalance);
  
              uint256 deltaBalance = address(this).balance;
  
              if (deltaBalance > 0) {
                  payable(marketingWallet).transfer(deltaBalance);
              }
          }
      }
  
      function swapTokensForETH(uint256 tokenAmount) private {
          address[] memory path = new address[](2);
          path[0] = address(this);
          path[1] = router.WETH();
  
          _approve(address(this), address(router), tokenAmount);
  
          // make the swap
          router.swapExactTokensForETHSupportingFeeOnTransferTokens(
              tokenAmount,
              0,
              path,
              address(this),
              block.timestamp
          );
      }
  
      function addLiquidity(uint256 tokenAmount, uint256 bnbAmount) private {
          // approve token transfer to cover all possible scenarios
          _approve(address(this), address(router), tokenAmount);
  
          // add the liquidity
          router.addLiquidityETH{value: bnbAmount}(
              address(this),
              tokenAmount,
              0, // slippage is unavoidable
              0, // slippage is unavoidable
              address(0xdead),
              block.timestamp
          );
      }
  
      function setSwapEnabled(bool state) external onlyOwner {
          // to be used only in case of dire emergency
          swapEnabled = state;
          emit SwapEnabled();
      }
  
      function setSwapThreshold(uint256 new_amount) external onlyOwner {
          swapThreshold = new_amount * (10**18);
          emit SwapThresholdUpdated();
      }
  
      function launch() external onlyOwner {
          require(!launched, "Trading already active");
          launched = true;
          swapEnabled = true;
          emit Launched();
      }
  
      function setMarketingWallet(address newWallet) external onlyOwner {
          excludedFromFees[marketingWallet] = false;
          require(
              newWallet != address(0),
              "Marketing Wallet cannot be zero address"
          );
          marketingWallet = newWallet;
          emit MarketingWalletUpdated();
      }
  
      function setExcludedFromFees(address _address, bool state)
          external
          onlyOwner
      {
          excludedFromFees[_address] = state;
          emit ExcludedFromFeesUpdated();
      }
  
      function withdrawStuckTokens(address _token, address _to)
          external
          onlyOwner
          returns (bool _sent)
      {
          uint256 _contractBalance = IERC20(_token).balanceOf(address(this));
          _sent = IERC20(_token).transfer(_to, _contractBalance);
          emit TransferForeignToken(_token, _contractBalance);
      }
  
      function clearStuckEthers(uint256 amountPercentage) external onlyOwner {
          uint256 amountETH = address(this).balance;
          payable(msg.sender).transfer((amountETH * amountPercentage) / 100);
          emit StuckEthersCleared();
      }
  
      function unclog() public onlyOwner lockSwapping {
          swapTokensForETH(balanceOf(address(this)));
  
          uint256 ethBalance = address(this).balance;
          uint256 ethMarketing = ethBalance;
  
          bool success;
          (success, ) = address(marketingWallet).call{value: ethMarketing}("");
      }
  
      // fallbacks
      receive() external payable {}
  }