Educational Codeforces Round 27

Revision en6, by awoo, 2017-09-06 20:56:21

Hello Codeforces!

On August 21, 18:05 MSK Educational Codeforces Round 27 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.

The round will be unrated for all users and will be held on extented ACM ICPC rules. After the end of the contest you will have one day 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 prepared by Ivan BledDest Androsov, Vladimir vovuh Petrov, Mike MikeMirzayanov Mirzayanov and me.

Good luck to all participants!

Harbour.Space also has a word for you:

We are delighted to welcome the 2017 ACM-ICPC World Champions, ITMO, to our 2nd Hello Barcelona Programming Bootcamp in collaboration with Moscow Workshops ACM ICPC starting September 27.

All the top Russian teams are coming, including St. Petersburg State University, MIPT, Ural Federal University, Tomsk, Novosibirsk, Saratov and Perm, as well as the world’s top universities such as Waterloo, Central Florida, Hangzhou Dianzi, Singapore, KTH and dozens of others — so far teams from 30 countries have signed up.

The event’s gold sponsor is Sberbank, the biggest commercial and investment bank of Eastern Europe and Russia. Thanks to their support we expect that the top participants will be awarded valuable prizes, alongside high-profile internship and job opportunities.

We can’t wait to see all of you coming to learn, practice and compete on the international stage, smoothing your road towards April World Finals in Beijing.

Ps. Registrations close on September 1.

UPD: Editorial is published

Congratulations to the winners:

Rank Competitor Problems Solved Penalty
1 uwi 7 288
2 quailty 7 314
3 Andrei1998 7 318
4 rajat1603 7 374
5 fatego 7 374

Congratulations to the best hackers:

Rank Competitor Hack Count
1 uwi 455:-11
2 halyavin 305:-4
3 STommydx 103:-2
4 Lhtie 48:-2
5 step_by_step 44:-28

1326 successful hacks and 300 unsuccessful hacks were made in total!

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

Problem Competitor Penalty
A ksun48 0:01
B jufusong 0:03
C markysha 0:03
D EKGMA 0:10
E halyavin 0:37
F eddy1021 0:34
G const_int_magic 0:08


  Rev. Lang. By When Δ Comment
en6 English awoo 2017-09-06 20:56:21 2618
ru6 Russian awoo 2017-09-06 20:55:21 2601
ru5 Russian awoo 2017-08-22 09:17:01 77
en5 English awoo 2017-08-22 09:14:33 73
en4 English awoo 2017-08-21 17:40:32 98
ru4 Russian awoo 2017-08-21 17:38:36 98
ru3 Russian awoo 2017-08-21 15:45:53 2 Мелкая правка: ' ITMO, to [our 2nd Hello ' -> ' ITMO, to our [2nd Hello '
en3 English awoo 2017-08-21 15:45:20 2 Tiny change: ' ITMO, to [our 2nd Hello ' -> ' ITMO, to our [2nd Hello '
en2 English awoo 2017-08-21 15:44:24 8
ru2 Russian awoo 2017-08-21 15:43:38 8
ru1 Russian awoo 2017-08-21 15:40:32 2249 Первая редакция перевода на Русский
en1 English awoo 2017-08-21 15:39:39 2102 Initial revision (published)