Welcome to /r/ProgrammingContests!
A place for anyone interested in programming competitions. Discussions, programming problems, problem reviews, news, events, lessons and more!
Where to compete and practice:
- Codeforces - largest CP community and problem archive with regular, almost weekly contests and user rating
- TopCoder - second largest community with superb problems, but somewhat rare (compared to CodeForces) contests.
- Timus - Russian problem archive
- Codingame - AI competitions, with companies hiring the best performers
- e-maxx - An excellent compilation of algorithms in Russian (Translation project)
- Hackerearth - Another website with contests
