/*
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\_$$  _|                                    \_$$  _|                                    $$$\    $$$ |                    
  $$ |         $$$$$$\  $$$$$$\$$$$\          $$ |   $$$$$$\   $$$$$$\  $$$$$$$\        $$$$\  $$$$ | $$$$$$\  $$$$$$$\  
  $$ |         \____$$\ $$  _$$  _$$\         $$ |  $$  __$$\ $$  __$$\ $$  __$$\       $$\$$\$$ $$ | \____$$\ $$  __$$\ 
  $$ |         $$$$$$$ |$$ / $$ / $$ |        $$ |  $$ |  \__|$$ /  $$ |$$ |  $$ |      $$ \$$$  $$ | $$$$$$$ |$$ |  $$ |
  $$ |        $$  __$$ |$$ | $$ | $$ |        $$ |  $$ |      $$ |  $$ |$$ |  $$ |      $$ |\$  /$$ |$$  __$$ |$$ |  $$ |
$$$$$$\       \$$$$$$$ |$$ | $$ | $$ |      $$$$$$\ $$ |      \$$$$$$  |$$ |  $$ |      $$ | \_/ $$ |\$$$$$$$ |$$ |  $$ |
\______|       \_______|\__| \__| \__|      \______|\__|       \______/ \__|  \__|      \__|     \__| \_______|\__|  \__|
                                                                                                                         
⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⢀⢄⢄⠢⡠⡀⢀⠄⡀⡀⠄⠄⠄⠄⠐⠡⠄⠉⠻⣻⣟⣿⣿⣄⠄⠄⠄⠄⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⢠⢣⠣⡎⡪⢂⠊⡜⣔⠰⡐⠠⠄⡾⠄⠈⠠⡁⡂⠄⠔⠸⣻⣿⣿⣯⢂⠄⠄⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠄⠄⡀⠄⠄⠄⠄⠄⠄⠄⠐⢰⡱⣝⢕⡇⡪⢂⢊⢪⢎⢗⠕⢕⢠⣻⠄⠄⠄⠂⠢⠌⡀⠄⠨⢚⢿⣿⣧⢄⠄⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠄⡐⡈⠌⠄⠄⠄⠄⠄⠄⠄⡧⣟⢼⣕⢝⢬⠨⡪⡚⡺⡸⡌⡆⠜⣾⠄⠄⠄⠁⡐⠠⣐⠨⠄⠁⠹⡹⡻⣷⡕⢄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⢄⠇⠂⠄⠄⠄⠄⠄⠄⠄⢸⣻⣕⢗⠵⣍⣖⣕⡼⡼⣕⢭⢮⡆⠱⣽⡇⠄⠄⠂⠁⠄⢁⠢⡁⠄⠄⠐⠈⠺⢽⣳⣄⠄⠄
⠄⠄⠄⠄⠄⢔⢕⢌⠄⠄⠄⠄⠄⢀⠄⠄⣾⢯⢳⠹⠪⡺⡺⣚⢜⣽⣮⣳⡻⡇⡙⣜⡇⠄⠄⢸⠄⠄⠂⡀⢠⠂⠄⢶⠊⢉⡁⠨⡒⠄⠄
⠄⠄⠄⠄⡨⣪⣿⢰⠈⠄⠄⠄⡀⠄⠄⠄⣽⣵⢿⣸⢵⣫⣳⢅⠕⡗⣝⣼⣺⠇⡘⡲⠇⠄⠄⠨⠄⠐⢀⠐⠐⠡⢰⠁⠄⣴⣾⣷⣮⣇⠄
⠄⠄⠄⠄⡮⣷⣿⠪⠄⠄⠄⠠⠄⠂⠠⠄⡿⡞⡇⡟⣺⣺⢷⣿⣱⢕⢵⢺⢼⡁⠪⣘⡇⠄⠄⢨⠄⠐⠄⠄⢀⠄⢸⠄⠄⣿⣿⣿⣿⣿⡆
⠄⠄⠄⢸⣺⣿⣿⣇⠄⠄⠄⠄⢀⣤⣖⢯⣻⡑⢕⢭⢷⣻⣽⡾⣮⡳⡵⣕⣗⡇⠡⡣⣃⠄⠄⠸⠄⠄⠄⠄⠄⠄⠈⠄⠄⢻⣿⣿⣵⡿⣹
⠄⠄⠄⢸⣿⣿⣟⣯⢄⢤⢲⣺⣻⣻⡺⡕⡔⡊⡎⡮⣿⣿⣽⡿⣿⣻⣼⣼⣺⡇⡀⢎⢨⢐⢄⡀⠄⢁⠠⠄⠄⠐⠄⠣⠄⠸⣿⣿⣯⣷⣿
⠄⠄⠄⢸⣿⣿⣿⢽⠲⡑⢕⢵⢱⢪⡳⣕⢇⢕⡕⣟⣽⣽⣿⣿⣿⣿⣿⣿⣿⢗⢜⢜⢬⡳⣝⢸⣢⢀⠄⠄⠐⢀⠄⡀⠆⠄⠸⣿⣿⣿⣿
⠄⠄⠄⢸⣿⣿⣿⢽⣝⢎⡪⡰⡢⡱⡝⡮⡪⡣⣫⢎⣿⣿⣿⣿⣿⣿⠟⠋⠄⢄⠄⠈⠑⠑⠭⡪⡪⢏⠗⡦⡀⠐⠄⠄⠈⠄⠄⠙⣿⣿⣿
⠄⠄⠄⠘⣿⣿⣿⣿⡲⣝⢮⢪⢊⢎⢪⢺⠪⣝⢮⣯⢯⣟⡯⠷⠋⢀⣠⣶⣾⡿⠿⢀⣴⣖⢅⠪⠘⡌⡎⢍⣻⠠⠅⠄⠄⠈⠢⠄⠄⠙⠿
⠄⠄⠄⠄⣿⣿⣿⣿⣽⢺⢍⢎⢎⢪⡪⡮⣪⣿⣞⡟⠛⠋⢁⣠⣶⣿⡿⠛⠋⢀⣤⢾⢿⣕⢇⠡⢁⢑⠪⡳⡏⠄⠄⠄⠄⠄⠄⢑⠤⢀⢠
⠄⠄⠄⠄⢸⣿⣿⣿⣟⣮⡳⣭⢪⡣⡯⡮⠗⠋⠁⠄⠄⠈⠿⠟⠋⣁⣀⣴⣾⣿⣗⡯⡳⡕⡕⡕⡡⢂⠊⢮⠃⠄⠄⠄⠄⠄⢀⠐⠨⢁⠨
⠄⠄⠄⠄⠈⢿⣿⣿⣿⠷⠯⠽⠐⠁⠁⢀⡀⣤⢖⣽⢿⣦⣶⣾⣿⣿⣿⣿⣿⣿⢎⠇⡪⣸⡪⡮⠊⠄⠌⠎⡄⠄⠄⠄⠄⠄⠄⡂⢁⠉⡀
⠄⠄⠄⠄⠄⠈⠛⠚⠒⠵⣶⣶⣶⣶⢪⢃⢇⠏⡳⡕⣝⢽⡽⣻⣿⣿⣿⣿⡿⣺⠰⡱⢜⢮⡟⠁⠄⠄⠅⠅⢂⠐⠄⠐⢀⠄⠄⠄⠂⡁⠂
⠄⠄⠄⠄⠄⠄⠄⠰⠄⠐⢒⣠⣿⣟⢖⠅⠆⢝⢸⡪⡗⡅⡯⣻⣺⢯⡷⡯⡏⡇⡅⡏⣯⡟⠄⠄⠄⠨⡊⢔⢁⠠⠄⠄⠄⠄⠄⢀⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠄⠄⠹⣿⣿⣿⣿⢿⢕⢇⢣⢸⢐⢇⢯⢪⢪⠢⡣⠣⢱⢑⢑⠰⡸⡸⡇⠁⠄⠄⠠⡱⠨⢘⠄⠂⡀⠂⠄⠄⠄⠄⠈⠂⠄
⠄⠄⠄⠄⠄⠄⠄⠄⠄⢻⣿⣿⣿⣟⣝⢔⢅⠸⡘⢌⠮⡨⡪⠨⡂⠅⡑⡠⢂⢇⢇⢿⠁⠄⢀⠠⠨⡘⢌⡐⡈⠄⠄⠠⠄⠄⠄⠄⠄⠄⠁
⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠹⣿⣿⣿⣯⢢⢊⢌⢂⠢⠑⠔⢌⡂⢎⠔⢔⢌⠎⡎⡮⡃⢀⠐⡐⠨⡐⠌⠄⡑⠄⢂⠐⢀⠄⠄⠈⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠙⣿⣿⣿⣯⠂⡀⠔⢔⠡⡹⠰⡑⡅⡕⡱⠰⡑⡜⣜⡅⡢⡈⡢⡑⡢⠁⠰⠄⠨⢀⠐⠄⠄⠄⠄⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠈⠻⢿⣿⣷⣢⢱⠡⡊⢌⠌⡪⢨⢘⠜⡌⢆⢕⢢⢇⢆⢪⢢⡑⡅⢁⡖⡄⠄⠄⠄⢀⠄⠄⠄⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠛⢿⣿⣵⡝⣜⢐⠕⢌⠢⡑⢌⠌⠆⠅⠑⠑⠑⠝⢜⠌⠠⢯⡚⡜⢕⢄⠄⠁⠄⠄⠄⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠙⢿⣷⡣⣇⠃⠅⠁⠈⡠⡠⡔⠜⠜⣿⣗⡖⡦⣰⢹⢸⢸⢸⡘⠌⠄⠄⠄⠄⠄⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠈⠋⢍⣠⡤⡆⣎⢇⣇⢧⡳⡍⡆⢿⣯⢯⣞⡮⣗⣝⢎⠇⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠁⣿⣿⣎⢦⠣⠳⠑⠓⠑⠃⠩⠉⠈⠈⠉⠄⠁⠉⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠈⡿⡞⠁⠄⠄⢀⠐⢐⠠⠈⡌⠌⠂⡁⠌⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠈⢂⢂⢀⠡⠄⣈⠠⢄⠡⠒⠈⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠢⠠⠊⠨⠐⠈⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄⠄

   
    
*/

//SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface IERC20 {

    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function allowance(address owner, address spender) external view returns (uint256);

    function transfer(address recipient, uint256 amount) external returns (bool);
    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 StarkIndustries is IERC20 {
    using SafeMath for uint256;

    string public constant name = "Stark Industries";
    string public constant symbol = "STARK";
    uint8 public constant decimals = 18;

    mapping(address => uint256) balances;
    mapping(address => mapping (address => uint256)) allowed;

    uint256 private totalSupply_ = 100000000*10**uint256(decimals);

    constructor() public {
        balances[msg.sender] = totalSupply_;
    }

    function totalSupply() public override view returns (uint256) {
        return totalSupply_;
    }

    function balanceOf(address tokenOwner) public override view returns (uint256) {
        return balances[tokenOwner];
    }


    function transfer(address receiver, uint256 numTokens) public override returns (bool) {

        require(numTokens <= balances[msg.sender]);
        balances[msg.sender] = balances[msg.sender].sub(numTokens);
        balances[receiver] = balances[receiver].add(numTokens);
        emit Transfer(msg.sender, receiver, numTokens);
        return true;

    }

    function approve(address delegate, uint256 numTokens) public override returns (bool) {
        allowed[msg.sender][delegate] = numTokens;
        emit Approval(msg.sender, delegate, numTokens);
        return true;
    }

    function allowance(address owner, address delegate) public override view returns (uint) {
        return allowed[owner][delegate];
    }

    function transferFrom(address owner, address buyer, uint256 numTokens) public override returns (bool) {

        require(numTokens <= balances[owner]);
        require(numTokens <= allowed[owner][msg.sender]);

        balances[owner] = balances[owner].sub(numTokens);
        allowed[owner][msg.sender] = allowed[owner][msg.sender].sub(numTokens);
        balances[buyer] = balances[buyer].add(numTokens);
        emit Transfer(owner, buyer, numTokens);
        return true;

    }
}

library SafeMath {
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
      assert(b <= a);
      return a - b;
    }

    function add(uint256 a, uint256 b) internal pure returns (uint256) {
      uint256 c = a + b;
      assert(c >= a);
      return c;
    }
}