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Contests

Author: Benjamin Qi

Good contests to participate in as well as a few tools.

Frequent Contests

These websites hold contests that I frequently participate in.

Resources
CLISTextensive list of contests
kenkooookeep track of which AtCoder problems you've done
  • AtCoder
    • probably the highest quality, although difficulty isn't always reasonable
    • Beginner / Regular Contests: 4 or 6 problems, ~100 min
    • Grand Contests: 6 problems, 110 - 150 min
  • Codeforces
    • Div 1-4: 5-6 problems (with some variations), 2 to 2.5 hrs
  • Topcoder
    • Div 2, Div 1
    • 75 min coding, 15 min challenge
    • Solutions only tested after contest!
  • Don Mills OJ
    • at least one contest every month during school year

Other Websites

Resources
misc ICPC contests
Indonesian
Feb - Nov
Monthly "Easy" - quality is not always good
Monthly Long, Lunchtime, Cookoff - quality is not always good
apparently only "Hack the Interview" contests now
no regular contests anymore, archive is still worth a look

Onsite Finals (Individual)

Let me know if there's something else I should try to qualify for!

Resources
Google25 from R3
TopCoder16; 4 from SRMs, 10 from R4, 2 from wildcard
Facebook25 from R3
AtCoder8 from AGC

Codeforces Tools

Resources
estimate rating changes!
recently updated
keep track of friends' progress
problem recommender (haven't used personally)
compare users
parse problem statements, submit, etc from command line
text editor using features from above

Contest Tools

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