Educational Codeforces Round 69 [Rated for Div. 2]

Revision en4, by awoo, 2019-07-23 17:53:10

Hello Codeforces!

On Jul/22/2019 17:35 (Moscow time) Educational Codeforces Round 69 (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 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!

UPD: Our friends at Harbour.Space also have a message for you:

Hello Codeforces!

We hope your summer is going well!

Last Friday we finished the second edition of the Tech Scouts Summer Camp, with 70 participants, 20 different nationalities and many solved problems. We had 6 participants with a full scholarship thanks to the collaboration between Harbour.Space and Codeforces and we are working on increasing this number next year.

We would also like to remind you that we offer scholarships for our technical programmes, such as Computer Science, Data Science and Cyber Security.

They are set in such a way that doesn’t require additional applications — we believe in merit and potential, and so what you put in your application to the university will be our criteria.

You could be just the diamond we’re looking for, but you’ll never know unless you apply!


UPD2: There will be 6 problems in the contest.

Congratulations to the winners:

Rank Competitor Problems Solved Penalty
1 Um_nik 6 111
2 Golovanov399 6 174
3 PinkRabbit 6 190
4 dreamoon_love_AA 6 198
5 _twilight 6 232
6 HIR180 6 252

Congratulations to the best hackers:

Rank Competitor Hack Count
1 greencis 122:-29
2 Ali_Zaiback 26
3 racsosabe 22:-7
4 plusplus6408 14
5 F1aMiR3 14:-3
6 crvineeth97 13:-2
397 successful hacks and 420 unsuccessful hacks were made in total!

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

Problem Competitor Penalty
A dorijanlendvaj 0:01
B Um_nik 0:04
C beefman 0:06
D Um_nik 0:12
E Benq 0:11
F Um_nik 0:31

UPD3: Editorial is out


  Rev. Lang. By When Δ Comment
en4 English awoo 2019-07-23 17:53:10 2840
ru6 Russian awoo 2019-07-23 17:52:34 2798
ru5 Russian awoo 2019-07-22 16:59:24 11 Мелкая правка: 'UPD2:** В контесте будет **6** задач' -> 'UPD2:** В раунде будет **6** задач.'
en3 English awoo 2019-07-22 16:58:52 58
ru4 Russian awoo 2019-07-22 16:58:11 44
ru3 Russian Una_Shem 2019-07-21 22:14:23 12 Мелкая правка: ' вас:\n\n_Hello Codeforce' -> ' вас:\n\n_Привет, Codeforce'
ru2 Russian Una_Shem 2019-07-21 20:36:45 1308
en2 English Una_Shem 2019-07-21 19:52:16 1284
en1 English awoo 2019-07-21 14:45:01 1276 Initial revision for English translation
ru1 Russian awoo 2019-07-21 14:44:36 1397 Первая редакция (опубликовано)