I have an idea how to make shortest mode more interesting. For now there is no way to win a game using C++ or Java. Win depends on what language you code in. I think it would be better if all players had to code in same language. Even if you don't know language you gonna need to use, in most cases 15 minutes is enough to find any necessary information in the Internet, moreover it'll force you to learn new languages!
What do you think?