Hello everybody!
Codeforces Round #368 (Div.2) takes place on August 20th. As usual Div.1 participants can join out of competition.
I am the author of all problems.
I want to thank danilka.pro and GlebsHP for helping me prepare this contest, vovuh for testing it, Roms for statement reading and MikeMirzayanov for platforms of Codeforces and Polygon.
I advise you read all problems, hope, you will enjoy them :)
Good luck and have fun!
UPD1: 500-1000-1500-2000-2500
UPD2: tutorial