Hello again, Codeforces!
All problems in this round were created and prepared by me, antontrygubO_o. I tried to make them interesting and hope that you will enjoy them!
A lot of thanks to arsijo for the excellent coordination of the round, kefaa2, gepardo, danya.smelskiy, re_eVVorld, Xellos, GandalfTheGrey, prof.PVH, KAN for the testing and valuable comments, and to Mike MikeMirzayanov Mirzayanov for the amazing platforms Codeforces и Polygon.
Participants in each division will be offered 6 problems and 2 hours 10 minutes to solve them. As usual, I strongly recommend reading statements of all problems!
I wish you good luck and high rating!