This Saturday May 20, 21:05 MSK rated Codeforces Round #415 takes place.
As for our previous round 384, the problems were set by Kiril kefaa Gulin and Yura hloya_ygrt Shilyaev. And this time Daniil Melnik Melnichenko joined us! Many thanks to coordinator Alex netman Vistyazh for help in preparations of the round, and also to Mike MikeMirzayanov Mirzayanov for Codeforces and Polygon systems.
While everyone is waiting for second half of "SKAM" series season, we offer you to solve problems, main characters of which would be stunning girl Noora and well-known to you from 794F - Leha and security system hacker Leha!
As always, participants of both divisions will be given 5 problems and 2 hours to solve them. Scoring will be announced before the round.
We hope you'll like our round! I wish everyone good luck and high rating!
UPD: Please pay attention that round was rescheduled.
UPD2: Scoring in each division is standart 500 — 1000 — 1500 — 2000 — 2500
UPD3: We are extremely sorry about the issue with problem C, but since it affected not many participants, round remains rated. At the same time, we can remove your unnecessary submissions and if you were affected, we can make round unrated for you. Please contact KAN with this question.
UPD4: Congratulations to the winners! Editorial will be posted tomorrow.
UPD5: Editorial is available http://codeforces.com/blog/entry/52099.