Tomorrow at 09:35 UTC there will be Codeforces Round #376 that is dedicated for the second division. At the same time there will be a Moscow School Team Olympiad, and, as a nice tradition, we bring you a CodeForces round based on its problems. Unfortunately, this time we weren't able to come up with a good problemset for a first division contestants, but, as usual, we invite first division to participate unofficially in this round.
Problems were prepared by timgaripov, platypus179, wilwell, Flyrise, ipavlov and gritukan under my control. We would like to thank members of jury of the Team Olympiad: Endagorion, Helen Andreeva and GlebsHP, who also works as a coordinator from the CodeForces side. Also we are very grateful to MikeMirzayanov for a Polygon system that makes problem preparation and coordination of many involved people much simpler, and for a great CodeForces community that we are all part of.
We suggest you 6 problems for 2 hours. Good luck!
UPD The contest is over, results are final, thanks for participating! The editorial will be published later
UPD2 I'm sorry for an editorial delay. It's finally available here.
Congratulations to contest winners: