Educational Codeforces Round 67 [Rated for Div. 2]

Revision en3, by awoo, 2019-07-01 19:03:31

Hello Codeforces!

On Jun/30/2019 17:45 (Moscow time) Educational Codeforces Round 67 (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 Neon Mescheryakov and me. Also huge thanks to Mike MikeMirzayanov Mirzayanov for great systems Polygon and Codeforces.

Good luck to all participants!

Congratulations to the winners:

Rank Competitor Problems Solved Penalty
1 Radewoosh 7 220
2 kefaa2 7 346
3 Retired_MiFaFaOvO 6 120
4 square1001 6 136
5 HIR180 6 153

Congratulations to the best hackers:

Rank Competitor Hack Count
1 2014CAIS01 76:-1
2 Prateek 50:-1
3 takumi152 32:-2
4 Holland_Pig 28
5 sys. 37:-24
1268 successful hacks and 1683 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 arknave 0:02
C HIR180 0:06
E Noam527 0:06
F zhoutb 0:28
G Luma 0:46

UPD: Editorial is out


  Rev. Lang. By When Δ Comment
en3 English awoo 2019-07-01 19:03:31 72
ru3 Russian awoo 2019-07-01 19:03:10 74
en2 English awoo 2019-07-01 18:41:02 2611
ru2 Russian awoo 2019-07-01 18:40:33 2587
en1 English awoo 2019-06-29 16:06:56 1276 Initial revision for English translation
ru1 Russian awoo 2019-06-29 16:06:27 1397 Первая редакция (опубликовано)