OJ Board

I have The "Programming Challenges" manual in front of me, it says there is a GNU g++ Integer class (p 103). Does such a thing really exist? I googled for documation, but didn't find anything.

I've never heard of such a thing. Perhaps the authors meant the GNU MP library (GMP). It is usually the free high precision arithmetic library of choice, though there are some other ones as well.

http://www.swox.com/gmp/