Codeforces Round #146 is going to be here soon. Round is prepared by WJMZBMR, xiaodao. I write problems for Div I and xiaodao write for Div II. Gerald did a great job in coordinating round preparing, and he also give some pretty good advise about problems. I'd like to express my gratitude to him. Traditionally thanks to Michael Mirzayanov (MikeMirzayanov) for perfect Codeforces system and Polygon system as well and Mary Belova (Delinur) for translating problems. Also thanks to donehl for testing the problems and making his comments about the problems.
Score distribution is 500-1000-1500-2000-2500 in both divisions.
Hope you enjoy the problems! =)
I apologize for the 10 minutes delay.I'm very sorry for the inconvenience I caused. So I'm writing a good editorial for compensation :)
The Editorial is here: Editorial
Congrats to winners!