Educational Codeforces Round 84 [Rated for Div. 2]

Revision en6, by pikmike, 2020-03-24 19:31:35

Hello Codeforces!

On Mar/23/2020 17:35 (Moscow time) Educational Codeforces Round 84 (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 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 Ne0n25 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 MiFaFaOvO 7 230
2 Volkov_Ivan 7 272
3 Egor 7 343
4 2829908231 7 360
5 rainboy 7 707

Congratulations to the best hackers:

Rank Competitor Hack Count
1 theStaticMind 14:-8
2 Chrollo_Lucifer 5:-1
3 Learner 10:-13
4 RitikBaid 3
5 Ashiok 4:-3
139 successful hacks and 617 unsuccessful hacks were made in total!

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

Problem Competitor Penalty
A fextivity 0:01
B Sonechko 0:05
C Isaunoya 0:05
D MiFaFaOvO 0:10
E Medeowex 0:11
F YangDavid 0:35
G rainboy 0:44

UPD: Editorial is out

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en6 English pikmike 2020-03-24 19:31:35 2618
ru6 Russian pikmike 2020-03-24 19:31:23 2594
en5 English pikmike 2020-03-24 19:28:10 72
ru5 Russian pikmike 2020-03-24 19:26:12 74
en4 English pikmike 2020-03-23 14:25:43 2 Tiny change: 'e given **6 problems*' -> 'e given **7 problems*'
ru4 Russian pikmike 2020-03-23 14:25:34 2 Мелкая правка: 'дложено **6 задач на ' -> 'дложено **7 задач на '
en3 English Una_Shem 2020-03-22 17:08:23 0 (published)
ru3 Russian Una_Shem 2020-03-22 17:08:07 0 (опубликовано)
en2 English pikmike 2020-03-22 16:46:03 2 Tiny change: 'e given **7 problems*' -> 'e given **6 problems*'
ru2 Russian pikmike 2020-03-22 16:45:52 2 Мелкая правка: 'дложено **7 задач на ' -> 'дложено **6 задач на '
en1 English pikmike 2020-03-22 16:45:19 1280 Initial revision for English translation (saved to drafts)
ru1 Russian pikmike 2020-03-22 16:44:34 1396 Первая редакция (сохранено в черновиках)