Today, there will be another CodeForces Round at 18:00 (Moscow time). It is a Div. 2 contest, but Div. 1 participants can take part out of competition also.
My name is Vuong and this is my very first CodeForces round. Hope that this is not the last one. I would like to thanks Maxim Akhmedov(Zlobober) for help me preparing the round, Maria Belova(Delinur) for translating problems into English, and Mike Mirzayanov(MikeMirzayanov) for such a great Polygon and CodeForces.
Be sure to read all problem statements before contest ended. Hope you enjoy the contest.
Good luck and have fun!
UPD The contest is over! Thanks all of you for participating!
Here is top 5 participants:
The editorial can be found here.