Congratulations to Petr Mitrichev (Petr), the Yandex.Algorithm 2011 Champion!
Congratulations also to Dmitry Dzhulgakov (dzhulgakov), Makoto Soejima (rng_58), Ivan Metelsky (ivan.metelsky), Alexey Levin (levlam) and Gennady Korotkevitch (tourist) who placed 2, 3, 4, 5 and 6 respectively! They solved as many problems as the champion. Full results are available here
Problems turned out to be really difficult: nobody managed to solve more than 3 problems during the 2 hours of competition. Problem A was considered much simpler than all others by the contest authors, but less than half of participants could solve it, and even the champion lacked 30 seconds to fix the last bug. Only one coder could solve problem E: Xhark from Korea.
Problem E was suggested by Ilya Kornakov (ilyakor) who is also a developer in my group at Yandex :) Problem A about domino and a guy named Gena was powered by Ivan Popelyshev (ivan.popelyshev). Problem B — Stanislav Pak, C — Denis Yarets. All three are also our employees. Problem D was suggested by Artem Ripatti. My problem was rejected at the last minute, so it will wait for you at the Petrozavodsk training camp :)
Thanks to all finalists, authors, participants out of competition, contest organizers, MIPT for the accomodations and the main sponsor — Yandex.
Good luck to everybody who competes in the OpenCup onsite today!
A few more photos from the competition:
|Petr and our foreign guests rng_58, wata and dolphinigle|
|ivan.metelsky, MikeMirzayanov and pieguy|