Educational Codeforces Round 98 [Rated for Div. 2]

Revision en4, by awoo, 2020-11-21 12:56:59

Hello Codeforces!

On Nov/19/2020 17:35 (Moscow time) Educational Codeforces Round 98 (Rated for Div. 2) will start.

Series of Educational Rounds continue being held as Harbour.Space University initiative! You can read the details about the cooperation between Harbour.Space University and Codeforces in the blog post.

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 6 or 7 problems and 2 hours to solve them.

The problems were invented and prepared by Roman Roms Glazov, Adilbek adedalic Dalabaev, Vladimir vovuh Petrov, Ivan BledDest Androsov, Maksim Neon Mescheryakov and me. Also huge thanks to Mike MikeMirzayanov Mirzayanov for great systems Polygon and Codeforces.

Good luck to all the participants!

Congratulations to the winners:

Rank Competitor Problems Solved Penalty
1 dlalswp25 6 205
2 Ormlis 6 207
3 Tlatoani 6 214
4 yokozuna57 6 232
5 peti1234 6 235

Congratulations to the best hackers:

Rank Competitor Hack Count
1 racsosabe 80:-17
2 Elo 33:-4
3 peti1234 24
5 xiaofan7 25:-10
605 successful hacks and 888 unsuccessful hacks were made in total!

And finally people who were the first to solve each problem:

Problem Competitor Penalty
A Geothermal 0:01
B SSRS_ 0:04
C Valera_Grinenko 0:02
D SSRS_ 0:10
E Akulyat 0:38
F Suiseiseki 0:58
G rainboy 0:42

UPD: Editorial is out


  Rev. Lang. By When Δ Comment
en4 English awoo 2020-11-21 12:56:59 2612
ru4 Russian awoo 2020-11-21 12:56:39 2588
en3 English awoo 2020-11-20 16:03:54 72
ru3 Russian awoo 2020-11-20 16:03:33 74
en2 English Una_Shem 2020-11-18 17:57:25 0 (published)
ru2 Russian Una_Shem 2020-11-18 17:57:16 0 (опубликовано)
en1 English awoo 2020-11-18 15:54:43 1285 Initial revision for English translation (saved to drafts)
ru1 Russian awoo 2020-11-18 15:53:57 1401 Первая редакция (сохранено в черновиках)