contract USDS is StandardToken {
    string  public name = "USDS.ZK";
    string  public symbol = "USDS";
    uint8   public decimals = 18;
    /**
        uint256 public totalSupply = 10 ** 27;
     */
    function ()
        external
    {
        revert();
    }

    constructor() public {
        totalSupply_ = 2 * 10 ** 27;
        balances[msg.sender] = totalSupply_;
    }
}
function ()
    external
{
    revert();
}

/**
 uint256 public totalSupply = 10 ** 27;
 */