Today, 8-th of April, the third round of the VK Cup 2012 will take place. It's the last selection round. Let me remind you that the registration for this round is also required and it’s closed five minutes before the start.
It's rated round. It's allowed to participate out of competiotion. For all such participators it's also rated round. If you participate out of competition, you may play in the second division.
The problemset has been developed by various authors from VK, Codeforces and Saratov State University.
We worked hard to make problems more hard than usually but solvable in two hours. We hope, participation in the round will be interesting for you and only best of the best will pass to the Final Round.
This round will be run according to Codeforces rules: with room assignments, hacks and usual score decrease. It will be rated for you either if you participate in VK Cup or just solve it as a normal round.
Top 50 competitors will advance to the Final Round. VK Cup Final will occur in July in Saint-Petersburg.
Please, to make the round even more interesting for you, read the statements of ALL problems.
Good luck and try to win!
In Div. 2 Edition it will be used dynamic problem costs http://codeforces.com/blog/entry/4172. The problems will be ordered by increasing of expected difficulties, but their max scores will be determined according to the number of participants solved them.