the "AI problem" on cf is well known thing, such known that after almost all of the recent contest there has been at least one blog complaining about it or reporting an "AI cheater", but cheating isn't anything new, in fact in almost every online game (and many other media and places) there are cheaters, but more importantly there are official ways to deal with them

most well known method is the "official report" feature most games have. I won't bore and cut to the chase, cf needs an official "report" feature and as far as I'm aware it eigther doesn't exist or isn't well built because most people are just writing blogs to report other (which could be, and probably is annoying for some people)

(also before I end the blog, please share if there other and better ways to deal with "cheaters" and "reports)