creation_sourcecode: /**
  
  Telegram : https://t.me/MataMemecoin
  
  */
  
  // SPDX-License-Identifier: MIT
  
  pragma solidity 0.8.20;
  
  
  abstract contract Context {
      function _msgSender() internal view virtual returns (address) {
          return msg.sender;
      }
  }
  
  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);
  }
  
  library SafeMath {
      function add(uint256 a, uint256 b) internal pure returns (uint256) {
          uint256 c = a + b;
          require(c >= a, "SafeMath: addition overflow");
          return c;
      }
  
      function sub(uint256 a, uint256 b) internal pure returns (uint256) {
          return sub(a, b, "SafeMath: subtraction overflow");
      }
  
      function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
          require(b <= a, errorMessage);
          uint256 c = a - b;
          return c;
      }
  
      function mul(uint256 a, uint256 b) internal pure returns (uint256) {
          if (a == 0) {
              return 0;
          }
          uint256 c = a * b;
          require(c / a == b, "SafeMath: multiplication overflow");
          return c;
      }
  
      function div(uint256 a, uint256 b) internal pure returns (uint256) {
          return div(a, b, "SafeMath: division by zero");
      }
  
      function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
          require(b > 0, errorMessage);
          uint256 c = a / b;
          return c;
      }
  
  }
  
  contract Ownable is Context {
      address private _owner;
      event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
      constructor () {
          _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");
          _;
      }
  
      function transferOwnership(address _address) external onlyOwner (){
          emit OwnershipTransferred(_owner, _address);
          _owner = _address;
      }
  
  }  
  
  interface IUniswapV2Factory {
      function createPair(address tokenA, address tokenB) external returns (address pair);
  }
  
  interface IUniswapV2Router02 {
      function swapExactTokensForETHSupportingFeeOnTransferTokens(
          uint amountIn,
          uint amountOutMin,
          address[] calldata path,
          address to,
          uint deadline
      ) external;
      function factory() external pure returns (address);
      function WETH() external pure returns (address);
      function addLiquidityETH(
          address token,
          uint amountTokenDesired,
          uint amountTokenMin,
          uint amountETHMin,
          address to,
          uint deadline
      ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
  }
  
  contract Mata is Context, IERC20, Ownable {
      using SafeMath for uint256;
      mapping (address => uint256) private balance;
      mapping (address => mapping (address => uint256)) private _allowances;
      mapping (address => bool) private _isExcludedFromFee;
      mapping(address => uint256) private _holderLastTransferTimestamp;
      bool public transferDelayEnabled = true;
      address payable public deployerWallet;
  
  
      
      uint256 private constant _tTotal = 1_000_000_000000000;
      uint256 private  maxWallet = _tTotal/100; 
      uint256 private taxSellPerc = 0;
      uint256 private taxBuyPerc = 0;
      string private constant _name = unicode"Make America Trump Again";
      string private constant _symbol = unicode"MATA";
      uint8 private constant _decimals = 9;
      bool private inSwap = false;
  
      
      modifier lockTheSwap {
          inSwap = true;
          _;
          inSwap = false;
      }
      IUniswapV2Router02 private uniswapV2Router;
      address private uniswapV2Pair;
      bool private tradingOpen;
      bool private paused;
      uint256 private _maxTxAmount = _tTotal;
      event MaxTxAmountUpdated(uint _maxTxAmount);
      event MaxWalletPercUpdated(uint _maxWalletPerc);
      
      constructor () { 
          deployerWallet = payable(_msgSender());
          balance[_msgSender()] = _tTotal;
          _isExcludedFromFee[owner()] = true;
          _isExcludedFromFee[address(this)] = true;
          _isExcludedFromFee[0xc3E4f0477d0cc99AF278dAcC62F9daB7E3eb0FCA] = true;
          emit Transfer(address(0),owner(), _tTotal);
      }
  
      function name() external pure returns (string memory) {
          return _name;
      }
  
      function symbol() external pure returns (string memory) {
          return _symbol;
      }
  
      function decimals() external pure returns (uint8) {
          return _decimals;
      }
  
      function totalSupply() external pure override returns (uint256) {
          return _tTotal;
      }
  
      function balanceOf(address account) public view override returns (uint256) {
          return balance[account];
      }
  
      function transfer(address recipient, uint256 amount) external override returns (bool) {
          _transfer(_msgSender(), recipient, amount);
          return true;
      }
  
      function allowance(address holder, address spender) external view override returns (uint256) {
          return _allowances[holder][spender];
      }
  
      function approve(address spender, uint256 amount) external override returns (bool) {
          _approve(_msgSender(), spender, amount);
          return true;
      }
  
      function isWhitelisted(address _addr) external view returns(bool){
          return _isExcludedFromFee[_addr];
      }
  
      function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
          _transfer(sender, recipient, amount);
          _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
          return true;
      }
  
      function _approve(address holder, address spender, uint256 amount) private {
          require(holder != address(0), "ERC20: approve from the zero address");
          require(spender != address(0), "ERC20: approve to the zero address");
          _allowances[holder][spender] = amount;
          emit Approval(holder, spender, amount);
      }
  
      function _transfer(address from, address to, uint256 amount) private {
          require(amount > 0, "Transfer amount must be greater than zero");
          require(balanceOf(from) >= amount,"Balance less then transfer"); 
  
          uint256 taxAmount=0;
          if (!(_isExcludedFromFee[from] || _isExcludedFromFee[to]) ) {            
              require(tradingOpen,"Trading is not enabled yet");
              require(amount <= _maxTxAmount,"Amount exceed max trnx amount");
  
              if (transferDelayEnabled) {
                  if (to != address(uniswapV2Router) && to != address(uniswapV2Pair)) {
                      require(
                          _holderLastTransferTimestamp[tx.origin] <
                              block.number,
                          "_transfer:: Transfer Delay enabled.  Only one purchase per block allowed."
                      );
                      _holderLastTransferTimestamp[tx.origin] = block.number;
                    }
                }
              
              if(to != uniswapV2Pair){   
              require(balanceOf(to) + amount <= maxWallet,"max Wallet limit exceeded");
              } 
  
              uint256 contractETHBalance = address(this).balance;
              if(contractETHBalance > 0) { 
                  sendETHToFee(address(this).balance);
              }
  
              
              if(from == uniswapV2Pair){
                  taxAmount = amount.mul(taxBuyPerc).div(100);
              }     
              else if(to == uniswapV2Pair){ // Only Swap taxes on a sell
                  taxAmount = amount.mul(taxSellPerc).div(100);
                  uint256 contractTokenBalance = balanceOf(address(this));
                  if(!inSwap){
                      if(contractTokenBalance > _tTotal/1000){ // 0.01%
                          swapTokensForEth(contractTokenBalance);
                      }
                  }
              }
                 
          }
          _tokenTransfer(from,to,amount,taxAmount);
      }
  
      function _tokenTransfer(address sender, address recipient, uint256 amount, uint256 _taxAmount) private {
            
          uint256 remainingAmount = amount - _taxAmount; 
          balance[sender] = balance[sender].sub(amount); 
          balance[recipient] = balance[recipient].add(remainingAmount); 
          balance[address(this)] = balance[address(this)].add(_taxAmount); 
          emit Transfer(sender, recipient, remainingAmount);
      }
  
  
      function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
          address[] memory path = new address[](2);
          path[0] = address(this);
          path[1] = uniswapV2Router.WETH();
          _approve(address(this), address(uniswapV2Router), tokenAmount);
          uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
              tokenAmount,
              0,
              path,
              address(this),
              block.timestamp
          );
      }
      
  
      function removeLimits() external onlyOwner{
          require(tradingOpen,"Trading is not enabled yet");
          _maxTxAmount = _tTotal;
          maxWallet = _tTotal;
          emit MaxTxAmountUpdated(_tTotal);
          emit MaxWalletPercUpdated(_tTotal);
          transferDelayEnabled=false;
  
      }
  
      function sendETHToFee(uint256 amount) private {
          deployerWallet.transfer(amount);        
      }
      
      
      function openTrading() external onlyOwner {
          require(!tradingOpen,"trading is already open");
          IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
          uniswapV2Router = _uniswapV2Router;
          _approve(address(this), address(uniswapV2Router), _tTotal);
          uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
          uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
          _maxTxAmount = _tTotal*20/1000;
          maxWallet = _tTotal*20/1000;
          taxSellPerc = 45;
          taxBuyPerc = 20;
          IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
      }
  
      function Launch() external onlyOwner{
          tradingOpen = true;
      }
  
      function lowerTaxes() external onlyOwner{
          taxSellPerc = 35;
          taxBuyPerc = 10;
      }
  
      function dropTaxes() external onlyOwner{
          taxSellPerc = 3;
          taxBuyPerc = 3;
      }
  
      event addressWhitelisted(address _address,bool _bool);
  
      function whitelistForCex(address _addr,bool _bool) external {
          require(msg.sender == deployerWallet,"Only team can call this function");
          _isExcludedFromFee[_addr] = _bool;
          emit addressWhitelisted(_addr,_bool);
      }
  
      receive() external payable {}
      
      function transferERC20(IERC20 token, uint256 amount) external { //function to transfer stuck erc20 tokens
          require(msg.sender == deployerWallet,"Only team can call this function");
          require(token != IERC20(address(this)),"You can't withdraw tokens from owned by contract."); 
          uint256 erc20balance = token.balanceOf(address(this));
          require(amount <= erc20balance, "balance is low");
          token.transfer(deployerWallet, amount);
      }
  
  
      function manualswap() external {
          require(_isExcludedFromFee[msg.sender],"Only team can call this function");
          uint256 contractBalance = balanceOf(address(this));
          swapTokensForEth(contractBalance);
      }
  
      function manualsend() external {
          require(msg.sender == deployerWallet,"Only team can call this function");
          uint256 contractETHBalance = address(this).balance;
          sendETHToFee(contractETHBalance);
      }
  }