Codeforces Round #620 (Div. 2)

Revision en6, by djm03178, 2020-02-15 18:24:14

안녕하세요, 코드포스! (Hello, Codeforces!)

I'm glad to invite you to Codeforces Round #620 (Div. 2). The contest will start at 15.02.2020 16:05 (Московское время), and it is rated for all participants with ratings under 2100.

You will be given 6 problems and one of the problems has 2 subtasks. The contest duration is 2 hours. The score distribution will be announced later.

All problems are prepared by me, with huge help from the testers with developing great solutions.

I'll be on the community Discord server after the contest to share my thoughts and get feedback about the problems.

Thanks to 79brue, molamola., FlowerOfSorrow, evenharder, cs71107, Justice_Hui, rkm0959, chpark1111, imeimi, alswhp, gaelim, jh05013 (Good tester), yuto0518, N_jara, aryanc403, SnowGoose, --Someone--, surung9898, and ko_osaga for testing the round. I would also like to thank 300iq for round coordination, and MikeMirzayanov for the great Codeforces and Polygon system.

Hope you enjoy the problems!

UPD: The scoring distribution is 500 — 1000 — 1500 — 1750 — 2000 — (2000 + 1000)

UPD2: The contest is finished! Thanks so much for your participation! The editorial is here.

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  Rev. Lang. By When Δ Comment
en7 English djm03178 2020-02-15 19:50:46 404
en6 English djm03178 2020-02-15 18:24:14 143
en5 English djm03178 2020-02-15 13:25:46 118
en4 English djm03178 2020-02-13 21:19:46 162
en3 English djm03178 2020-02-13 19:38:50 0 (published)
en2 English djm03178 2020-02-13 18:59:58 101
en1 English djm03178 2020-02-13 18:55:35 1227 Initial revision (saved to drafts)