New C++ standard approvd

1. You don't have to type "long long int", just "long long" is equivalent.

2. #include <stdint.h>, use int64_t. If that's not available on your system (Visual Studio before 2010), you could typedef it yourself.

I'm not using visual studio at all for this. Writing it in Notepad++ and then compiling with gcc

And uhhhh I'll try long long next time I'm working on it, although I've never heard of that before...