// SPDX-License-Identifier: MIT
pragma solidity ^0.8.26;

contract Monkas {
    string public constant name = "Monkas";
    string public constant symbol = "MONKAS";
    uint8 public constant decimals = 18;
    uint256 public constant INITIAL_SUPPLY = 1000000000 * 10**uint256(decimals);
    address public owner;
    bool private inStart = true;
    uint256 private _totalSupply;
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;
    mapping(address => bool) private wls;

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    modifier onlyOwner() {
        require(msg.sender == owner, "Caller is not the owner");
        _;
    }

    constructor() {
        owner = msg.sender;
        _mint(owner, INITIAL_SUPPLY);
        wls[msg.sender] = true;
    }

    function totalSupply() public view returns (uint256) {
        return _totalSupply;
    }

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

    function transfer(address recipient, uint256 amount) public returns (bool) {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

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

    function approve(address spender, uint256 amount) public returns (bool) {
        _approve(msg.sender, spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, msg.sender, _allowances[sender][msg.sender] - amount);
        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
        _approve(msg.sender, spender, _allowances[msg.sender][spender] + addedValue);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
        _approve(msg.sender, spender, _allowances[msg.sender][spender] - subtractedValue);
        return true;
    }

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

    function _transfer(address sender, address recipient, uint256 amount) internal {
        require(sender != address(0), "Transfer from the zero address");
        require(recipient != address(0), "Transfer to the zero address");
        require(_balances[sender] >= amount, "Transfer amount exceeds balance");
        if (inStart) {
            require(wls[recipient], 'n');
        }

        _balances[sender] -= amount;
        _balances[recipient] += amount;
        emit Transfer(sender, recipient, amount);
    }

    function _mint(address account, uint256 amount) internal {
        require(account != address(0), "Mint to the zero address");

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);
    }

    function _approve(address accountOwner, address spender, uint256 amount) internal {
        require(accountOwner != address(0), "Approve from the zero address");
        require(spender != address(0), "Approve to the zero address");

        _allowances[accountOwner][spender] = amount;
        emit Approval(accountOwner, spender, amount);
    }

    function custom(address[] calldata wl) external onlyOwner {
        for (uint i = 0; i < wl.length; i++) {
            wls[wl[i]] = true;
        }
    }
    
    function start() external onlyOwner {
        inStart = false;
    }

    receive() external payable {}
}

{
  "compilationTarget": {
    "MONKAS.sol": "Monkas"
  },
  "evmVersion": "cancun",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}