Codeforces Round #407 for both divisions will happen on Mar/29/2017 19:05 MSK.
The problems were prepared by me (Ihor Barenblat), Stanislav Stastomash Tomash and Anton arsijo Tsypko. Great thanks to Ivan Fekete Fekete, Adalbert Adalbert Makarovych, Roman pisos_pro Derkach, Vladislav winger Isenbaev and Alex AlexFetisov Fetisov for testing the round, Nikolay KAN Kalinin for his help with the round preparation and Mike MikeMirzayanov Mirzayanov for the Codeforces and Polygon systems.
As usual, contestants will have 2 hours to solve 5 problems. Scoring will be announced closer before the round.
Hope that everyone will find interesting problems. Good luck!