I'd like to invite you to Codeforces Round #288 (Div. 2). It'll be held on Tuesday, January 27 at 19:30 MSK and as usual Div. 1 participants can join out of competition.
Great thanks to Maxim Akhmedov (Zlobober) for helping me preparing the contest, to Maria Belova (Delinur) for translating the statements into English, to Mike Mirzayanov (MikeMirzayanov) for the great Polygon platform and ideas of some problems and to my dear teammates Arthur Svechnikov (ikar) and Ilya Los (IlyaLos) for writing solutions.
The scoring distribution will be announced later. Good luck everyone!
UPD Score system is standart 500-1000-1500-2000-2500.
UPD2 Competition completed! Thank you all!
UPD3 You can find editorial here.
UPD4 Congratulations to the winners!