// SPDX-License-Identifier: UNLICENSED

pragma solidity ^0.8.0;

abstract contract BaseContext {
    function _getSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _getData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

interface IERC20 {
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);

    function totalSupply() external view returns (uint256);
    function balanceOf(address holder) external view returns (uint256);
    function transfer(address recipient, uint256 value) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint256);
    function approve(address spender, uint256 value) external returns (bool);
    function transferFrom(address from, address recipient, uint256 value) external returns (bool);
}

interface IERC20Metadata is IERC20 {
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
}

contract ERC20 is BaseContext, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;
    uint256 private _totalSupply;
    string private _tokenName;
    string private _tokenSymbol;

    constructor(string memory name_, string memory symbol_) {
        _tokenName = name_;
        _tokenSymbol = symbol_;
    }

    function name() public view virtual override returns (string memory) {
        return _tokenName;
    }

    function symbol() public view virtual override returns (string memory) {
        return _tokenSymbol;
    }

    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

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

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

    function transfer(address recipient, uint256 value) public virtual override returns (bool) {
        address sender = _getSender();
        _executeTransfer(sender, recipient, value);
        return true;
    }

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

    function approve(address spender, uint256 value) public virtual override returns (bool) {
        address owner = _getSender();
        _authorize(owner, spender, value);
        return true;
    }

    function transferFrom(address from, address recipient, uint256 value) public virtual override returns (bool) {
        address spender = _getSender();
        _decreaseAllowance(from, spender, value);
        _executeTransfer(from, recipient, value);
        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _getSender();
        _authorize(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _getSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: allowance underflow");
        unchecked {
            _authorize(owner, spender, currentAllowance - subtractedValue);
        }
        return true;
    }

    function _executeTransfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from zero address");
        require(to != address(0), "ERC20: transfer to zero address");

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: insufficient balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);
    }

    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to zero address");

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

    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from zero address");

        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);
    }

    function _authorize(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from zero address");
        require(spender != address(0), "ERC20: approve to zero address");

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

    function _decreaseAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _authorize(owner, spender, currentAllowance - amount);
            }
        }
    }
}

contract Pektalik is ERC20 {
    constructor() ERC20("Pektalik", "PEKTALIK") {
        _mint(_getSender(), 100_000_000 * 10 ** decimals());
    }
}

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