// SPDX-License-Identifier: UNLICENSED

pragma solidity ^0.8.0;

contract MyToken { string public constant name = "web3easy"; string public constant symbol = "W3E"; uint8 public constant decimals = 18; uint256 public constant MAX_SUPPLY = 1000 * (10 ** uint256(decimals));

mapping(address => uint256) private balances;
uint256 private tokenTotalSupply;

event Transfer(address indexed from, address indexed to, uint256 value);

constructor() {
    balances[msg.sender] = MAX_SUPPLY;
    tokenTotalSupply = MAX_SUPPLY;
    emit Transfer(address(0), msg.sender, MAX_SUPPLY);
}

function balanceOf(address _owner) public view returns (uint256) {
    return balances[_owner];
}

function transfer(address _to, uint256 _value) public returns (bool) {
    require(_to != address(0), "Invalid address");
    require(_value <= balances[msg.sender], "Insufficient balance");
    
    balances[msg.sender] -= _value;
    balances[_to] += _value;
    
    emit Transfer(msg.sender, _to, _value);
    return true;
}

function TotaltokenSupply() public view returns (uint256) {
    return tokenTotalSupply;
}

}