On May 27, 23:00 Moscow time, Round 2 of Yandex.Algorithm competition will take place. I wrote the majority of the problems in this contest, with some additional help from Zlobober.
I would like to thank Zlobober for all his help with coordinating this round, MikeMirzayanov for polygon, and of course, everyone who took the time to test this round.
Please note, the problems will be randomly arranged, so make sure you read everything during the round :)
If you are using Java, please submit using Java 7 x32.
See you in the competition soon!
UPD 1: Editorial here: http://codeforces.com/blog/entry/52223