// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

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);

}

contract MiMoneda is IERC20 {
string public constant name = «MiMoneda»;
string public constant symbol = «MMC»;
uint8 public constant decimals = 18;
uint256 private _totalSupply;

mapping(address => uint256) balances;
mapping(address => mapping(address => uint256)) allowed;

constructor(uint256 total) {
    _totalSupply = total;
    balances[msg.sender] = _totalSupply;
    emit Transfer(address(0), msg.sender, _totalSupply);
}

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

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

function transfer(address recipient, uint256 amount) public override returns (bool) {
    require(amount <= balances[msg.sender], "Saldo insuficiente");
    balances[msg.sender] -= amount;
    balances[recipient] += amount;
    emit Transfer(msg.sender, recipient, amount);
    return true;
}

function approve(address spender, uint256 amount) public override returns (bool) {
    allowed[msg.sender][spender] = amount;
    emit Approval(msg.sender, spender, amount);
    return true;
}

function allowance(address owner, address spender) public view override returns (uint256) {
    return allowed[owner][spender];
}

function transferFrom(
    address sender,
    address recipient,
    uint256 amount
) public override returns (bool) {
    require(amount <= balances[sender], "Saldo insuficiente");
    require(amount <= allowed[sender][msg.sender], "No autorizado");

    balances[sender] -= amount;
    allowed[sender][msg.sender] -= amount;
    balances[recipient] += amount;
    emit Transfer(sender, recipient, amount);
    return true;
}

}