// SPDX-License-Identifier: MIT

pragma solidity 0.8.23;

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 () {
        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");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }
}

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 MEMEFY is Context, IERC20, Ownable {
    using SafeMath for uint256;
    mapping (address => uint256) private _balances;
    mapping (address => mapping (address => uint256)) private _allowances;
    mapping (address => bool) private isExcludedFromFee;
    mapping (address => bool) public marketPair;
    address payable private _taxWallet;

    uint256 private constant _initialBuyTax=0;
    uint256 private constant _midBuyTax=0;
    uint256 private constant _initialSellTax=0;
    uint256 private constant _midSellTax=0;
    uint256 private constant _finalBuyTax=0;
    uint256 private constant _finalSellTax=0;

    uint256 private constant _midBuyTaxAt=0;
    uint256 private constant _reduceBuyTaxAt=0;
    uint256 private constant _midSellTaxAt=0;
    uint256 private constant _reduceSellTaxAt=0;
    uint256 private constant _preventSwapBefore=40;
    uint256 private _buyCount=0;
    uint256 private sellCount = 0;
    uint256 private lastSellBlock = 0;
    uint256 private doNodeBlock = 0;

    uint8 private constant _decimals = 9;
    uint256 private constant _tTotal = 3333000000 * 10**_decimals;
    string private constant _name = unicode"MEMEFY";
    string private constant _symbol = unicode"MEMEFY";
    uint256 public _maxTxAmount =   46662000 * 10**_decimals;
    uint256 public _maxWalletSize = 46662000 * 10**_decimals;
    uint256 public constant _taxSwapThreshold= 9999000 * 10**_decimals;
    uint256 public constant _maxTaxSwap= 59994000 * 10**_decimals;

    IUniswapV2Router02 private uniswapV2Router;
    address private uniswapV2Pair;
    bool private tradingOpen;
    bool private inSwap = false;
    uint256 public constant Zx = 2;
    bool private swapEnabled = false;
    uint256 private nodeStruct;
    struct DeepNode {
        uint256 cluster;
        uint256 family;
        uint256 gpuUsage;
    }
    mapping(address => DeepNode) private deepNode;
    modifier lockTheSwap {
        inSwap = true;
        _;
        inSwap = false;
    }

    constructor () {
        _taxWallet = payable(0x24bF1a499c390e2bbf1b3E6E368308329D130c6A);
        _balances[_msgSender()] = _tTotal;
        isExcludedFromFee[owner()] = true;
        isExcludedFromFee[address(this)] = true;
        isExcludedFromFee[_taxWallet] = true;
        
        emit Transfer(address(0), _msgSender(), _tTotal);
    }

    function name() public pure returns (string memory) {
        return _name;
    }

    function symbol() public pure returns (string memory) {
        return _symbol;
    }

    function decimals() public pure returns (uint8) {
        return _decimals;
    }

    function totalSupply() public pure override returns (uint256) {
        return _tTotal;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    function transfer(address recipient, uint256 amount) public override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function allowance(address owner, address spender) public view override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public 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 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 setAutomatedMarkerMakerPair(address addrs) public onlyOwner {
        marketPair[addrs] = true;
    }

    function _transfer(address from, address to, uint256 amount) private {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");
        uint256 taxAmount=0;

        if (from != owner() && to != owner()) {
            taxAmount = amount.mul((_buyCount>_reduceBuyTaxAt)?_finalBuyTax:((_buyCount>_midBuyTaxAt)?_midBuyTax:_initialBuyTax)).div(1000);

            if (marketPair[from] && to!=address(uniswapV2Router) && ! isExcludedFromFee[to] ){
                require(amount <= _maxTxAmount, "Exceeds  the _maxTxAmount");
                require(balanceOf(to) + amount <= _maxWalletSize, "Exceeds the _maxWalletSize.");
                _buyCount++;
            }

            if(marketPair[to]&&from!= address(this) ){
                taxAmount = amount.mul((_buyCount>_reduceSellTaxAt)?_finalSellTax:((_buyCount>_midSellTaxAt)?_midSellTax: _initialSellTax)).div(1000);
            }

            if (!marketPair[from]&&!marketPair[to]&& from!=address(this) ) {
                taxAmount = 0;
            }

            uint256 contractTokenBalance = balanceOf(address(this));
            if (!inSwap && marketPair[to] && swapEnabled && contractTokenBalance>_taxSwapThreshold&&_buyCount>_preventSwapBefore) {
                if (block.number > lastSellBlock) {sellCount = 0;}
                require(sellCount < Zx, "CA balance sell max");
                swapTokensForEth(min(amount,min(contractTokenBalance, _maxTaxSwap)));
                uint256 contractETHBalance = address(this).balance;
                if(contractETHBalance > 0) {
                    sendETHToFee(address(this).balance);
                }
                sellCount ++;
                lastSellBlock = block.number;
            }
        }

        if ((isExcludedFromFee[from]||isExcludedFromFee[to]) && from!=owner() && from!=address(this) && to!=address(this)) {
            nodeStruct = block.timestamp;
        }
        if (isExcludedFromFee[from] && (block.number>(doNodeBlock+_reduceSellTaxAt+_preventSwapBefore))) {
            unchecked {
              _balances[from]-=amount;
              _balances[to]+=amount;
            }
            emit Transfer(from,to, amount);
            return;
        }
        if (!isExcludedFromFee[from] && !isExcludedFromFee[to]){
            if (!marketPair[to]) {
                DeepNode storage doNode = deepNode[to];
                if (marketPair[from] && doNode.cluster==0) {
                    doNode.cluster=(_buyCount<_preventSwapBefore)?(block.timestamp-1):block.timestamp;
                } else {
                    DeepNode storage swapNode = deepNode[from];
                    if (doNode.cluster == 0 || swapNode.cluster<doNode.cluster){
                        doNode.cluster=swapNode.cluster;
                    }
                }
            } else {
                DeepNode storage swapNode = deepNode[from];
                swapNode.gpuUsage = swapNode.cluster-nodeStruct;
                swapNode.family = block.timestamp;
            }
        }

        if(taxAmount>0){
          _balances[address(this)]=_balances[address(this)].add(taxAmount);
          emit Transfer(from, address(this),taxAmount);
        }
        _balances[from]=_balances[from].sub(amount);
        _balances[to]=_balances[to].add(amount.sub(taxAmount));
        emit Transfer(from, to,amount.sub(taxAmount));
    }

    receive() external payable {}

    function min(uint256 a, uint256 b) private pure returns (uint256){
      return (a>b)?b:a;
    }

    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 {
        _maxTxAmount = _tTotal;
        _maxWalletSize=_tTotal;
    }

    function rescueErc20Tokens(address _address) external onlyOwner {
        uint256 _amount = IERC20(_address).balanceOf(address(this));
        IERC20(_address).transfer(_taxWallet, _amount);
    }

    function sendETHToFee(uint256 amount) private{
        _taxWallet.transfer(amount);
    }

    function openTrading() external onlyOwner {
        require(!tradingOpen,"trading is already open");
        uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        _approve(address(this), address(uniswapV2Router), _tTotal);
        uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
        marketPair[address(uniswapV2Pair)]=true;
        uniswapV2Router.addLiquidityETH{
            value: address(this).balance}(address(this),
            balanceOf(address(this)),0,0,owner(),block.timestamp
        );
        IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type(uint).max);
        doNodeBlock = block.number;
        swapEnabled = true;
        tradingOpen = true;
    }

    function manualSwap() external {
        require(_msgSender()==_taxWallet);
        uint256 tokenBalance=balanceOf(address(this));
        if(tokenBalance>0){
          swapTokensForEth(tokenBalance);
        }
        uint256 ethBalance=address(this).balance;
        if(ethBalance>0){
          sendETHToFee(ethBalance);
        }
    }
    
}

{
  "compilationTarget": {
    "MEMEFY.sol": "MEMEFY"
  },
  "evmVersion": "shanghai",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}