A first hour week

The Oct 22 - Oct 28 week had two Codeforces rounds. On Wednesday, it was time for Round 518 (problems, results, top 5 on the left, analysis). Radewoosh could not pass pretests in problem D even after 8 attempts, but it turned out to be not necessary for the first place as ksun48 has failed the same problem on systests. Congratulations to Radewoosh on the win!

Codeforces Round 519 took place on Sunday (problems, results, top 5 on the left, analysis, my screencast). With 6 problems solvable under an hour and the last problem which was too difficult to crack during the contest, the fight for the first place quite naturally came down to challenges. scott_wu extracted the most from the available opportunities and won by more than 100 points — well done!

Thanks for reading (not so much to read this time :)), and check back for more!