Links

Main website of the ICPC: http://icpc.baylor.edu/
Main website of the NWERC: http://nwerc.eu/
Main website of the GCPC: http://gcpc.nwerc.eu/
Website of the Uni Erlangen regarding the ICPC: http://icpc.informatik.uni-erlangen.de/
UVA Online Judge with collection of problems: http://uva.onlinejudge.org/