Question for HN: Many CodeJam competitors (this is not limited to CodeJam, though) do these competitions so often that they essentially have a library of similar problems and solutions to reference. In which case, a top competitor can identify a similar problem, copy the source code from his previous solution, and slightly modify it to the problem's specifics.
Is this considered cheating? It's incredibly frustrating for a competitor like me - who makes it into Round 2 by the skin of his teeth (rank 768 in round 1A) - to see the top guys (whose names I recognize!) finish problems in minutes. Is it possible for them to just be that fast? Maybe, but it's well-known that many copy solutions from previous problems.