Hello Codeforces!

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On Dec/24/2024 17:35 (Moscow time) Educational Codeforces Round 173 (Rated for Div. 2) will start.

This round will be rated for the participants with rating lower than 2100. It will be held on extended ICPC rules. The penalty for each incorrect submission until the submission with a full solution is 10 minutes. After the end of the contest, you will have 12 hours to hack any solution you want. You will have access to copy any solution and test it locally.

You will be given 7 problems and 2 hours to solve them.

The problems were invented and prepared by Artem Ferume Ilikaev, Ruslan AcidWrongGod Kapralov and me. We would like to thank Mike MikeMirzayanov Mirzayanov for great systems Polygon and Codeforces. Also, big thanks to problem testers: Um_nik, alex.dobleaga, Stanislau, Karabutsa, Golovanov399.

Attention: the contest uses some problems from the onsite stage of the KFU Olympiad, so if you participated in it, please refrain from taking part in the round.

Good luck to all the participants!