Educational Codeforces Round 20

Revision en9, by awoo, 2017-09-06 21:08:59

Hello Codeforces!

On April 28, 18:05 MSK will be held Educational Codeforces Round 20.

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

Here is the special message from Harbour.Space University for girls from India:

Harbour.Space University offers a unique opportunity to win a FULL SCHOLARSHIP for #womenintechIndia and join our amazing Data Science, Computer Science or Cyber Security Master's Programme in Barcelona, Spain!
Follow this link to complete the application form.

The round will be unrated for all users and it will be held with extented ACM ICPC rules. After that 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 15 minutes to solve them. Though this round may come a bit harder than two previous ones, we still hope that everyone will enjoy problems.

The round was prepared by Ivan BledDest Androsov, Mikhail MikeMirzayanov Mirzayanov and me.

Good luck!

UPD: Editorial is available here

Congratulations to the winners:

Rank Competitor Problems Solved Penalty
1 Um_nik 7 129
2 bmerry 7 160
3 kmjp 7 191
4 KrK 7 212
5 rajat1603 7 235

Congratulations to the best hackers:

Rank Competitor Hack Count
1 halyavin 135:-25
2 Nikitka_Herach 20
3 oipotato 17
4 tqyaaaaaaaang 16
5 GreenGrape 16:-3

324 successful hacks and 209 unsuccessful hacks were made in total!

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

Problem Competitor Penalty
A kmjp 0:02
B RockyB 0:02
C Lewin 0:07
D Um_nik 0:15
E eddy1021 0:20
F tanphatls987 0:07
G ODT 0:33

Tags educational round 20

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en9 English awoo 2017-09-06 21:08:59 2507
ru5 Russian awoo 2017-09-06 21:08:48 2492
en8 English awoo 2017-04-28 22:31:07 2 Tiny change: '!\n\n**UPD**: Editorial' -> '!\n\n**UPD:** Editorial'
en7 English awoo 2017-04-28 22:30:37 82
ru4 Russian awoo 2017-04-28 22:29:56 4 Мелкая правка: 'аунде!\n\nUPD: Разбор д' -> 'аунде!\n\n**UPD**: Разбор д'
ru3 Russian awoo 2017-04-28 22:29:30 76
en6 English awoo 2017-04-28 13:54:31 21 Tiny change: '7 problems and 2 hours 15' -> '7 problems** and **2 hours 15'
ru2 Russian awoo 2017-04-28 13:53:49 15
en5 English MikeMirzayanov 2017-04-27 23:51:18 25 Tiny change: 'University:\n\n<b><i' -> 'University for **girls from India**:\n\n<b><i'
en4 English MikeMirzayanov 2017-04-27 18:43:57 2 Tiny change: 'na, Spain!_ \n_Follow [th' -> 'na, Spain! \nFollow [th'
en3 English MikeMirzayanov 2017-04-27 18:43:43 9
en2 English MikeMirzayanov 2017-04-27 18:43:28 7 (published)
en1 English awoo 2017-04-27 17:34:13 1576 Initial revision for English translation
ru1 Russian awoo 2017-04-27 17:22:00 1305 Первая редакция (сохранено в черновиках)