I'm glad to announce that codeforces round #478 for the second division will take place on Tuesday, May 1st 17:05 MSK. First division participants can also take part out of competition.
Great thanks to Nikolay Kalinin (KAN) and Fudail Hasan (fudail225) for helping me prepare the contest, to Mike Mirzayanov (MikeMirzayanov) for the great Codeforces and Polygon platform, Many thanks for Amr Mahmoud (AmrMahmoud ) Tameem Zabalawi (timo14z), AmirReza PoorAkhavan (Arpa), Alexey Ilyukhov (Livace), Hag Ahmad (Reckt), Nikita Bosov (neckbosov) and Andrew Rayskiy (GreenGrape) for testing the round.
You will be given five problems and two hours to solve them. The scoring distribution will be published soon. Good luck everyone!
I hope you'll enjoy my round. I wish everyone good luck and high rating!
UPD1: problem scores: 500 — 1000 — 1500 — 2000 — 2500
Congratulations to the winners
UPD3 : Tutorial is out!.