function HiroyukiCoin() public {
        owner = msg.sender;

        symbol = "HRYK";
        name = "HiroyukiCoin";
        decimals = 18;

        _totalSupply = 20000000000000000000000000000000;
        _currentSupply = 0;

        startDate = now;
        endDate = now + 8 weeks;

        balances[owner] = _totalSupply;
        Transfer(address(0), owner, _totalSupply);
    }