Soon (on November 2 at 12:00 MSK) you are lucky to participate in Codeforces Round #209 for Div. 2 participants. Traditionally, Div. 1 participants can take part out of the competition. Pay attention to the round begining time!
Problems have been prepared by me. I want to thank Gerald Agapov (Gerald) and Ilya Los (IlyaLos) for help in preparation of this round, Mary Belova (Delinur) for translation of statements, Michael Mirzayanov (MikeMirzayanov) for marvelous Codeforces and Polygon systems.
UPD1: Scoring will be next: 500, 1000, 1500, 2500, 2500.
UPD2: Congratulations to winners!