Codeforces Round #631 (Div. 1 and Div. 2) — Thanks, Denis aramis Shitov!

Revision en18, by dreamoon_love_AA, 2020-04-05 20:07:10

Hello, everyone! Codeforces Round #631 will be held at Apr/03/2020 17:35 (Moscow time).

The problems are almost from me(dreamoon_love_AA), except one problem of which the idea is from drazil and developed by me. Also we want to thank 300iq for helping me prepare the round, isaf27, tmt514, rowdark, yp155136, wangyenjen, n_dao107 and zj713300 for testing this round, and MikeMirzayanov for Codeforces and Polygon.

This is my third time organizing a problemset for a Codeforces round (my previous rounds: Codeforces Round #292, Codeforces Round #320).

Good luck and have fun!

UPD: Below is a message for you from MikeMirzayanov:

About two weeks ago, we completed the crowdfunding campaign dedicated to the 10th anniversary of Codeforces. Community help inspires and provides resources for the development and operation of the platform. Thanks! With this round, we want to say thank you to Denis aramis Shitov, for his significant contribution and support. It is valuable, important and very nice when people from the community lend a helping hand and congratulate. Thank you, Denis!

UPD2: Also thanks to Shik for testing the round!

UPD3: Score distribution:

  • Div2: 500 1000 1500 1750 2500
  • Div1: 500 750 1500 2000 2500

UPD4: link to tutorial

UPD5:

I won't say sorry that the pretests are not strong. Because I don't think the pretests must be strong in every contest.

But I still want to give congratulations to the winners:

div1:

  1. Um_nik
  2. tourist
  3. Petr
  4. ecnerwala
  5. ffao

div2:

  1. Z_m0mmy
  2. hydd
  3. fafafafafafa
  4. timf1089
  5. FrijolitoAzul

Among these winners, I want to especially congratulate Um_nik. I am quite excited when I see him solve all problems.

Tags 631

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en18 English dreamoon_love_AA 2020-04-05 20:07:10 661
en17 English dreamoon_love_AA 2020-04-04 12:34:59 73
en16 English dreamoon_love_AA 2020-04-03 17:27:35 100
en15 English dreamoon_love_AA 2020-04-03 17:01:35 76
en14 English MikeMirzayanov 2020-04-02 17:53:56 43 (published)
en13 English MikeMirzayanov 2020-04-02 17:52:39 555 (saved to drafts)
en12 English dreamoon_love_AA 2020-04-02 12:12:39 2 Tiny change: 's Round #272](https:/' -> 's Round #292](https:/'
en11 English dreamoon_love_AA 2020-04-01 21:26:48 0 (published)
en10 English dreamoon_love_AA 2020-04-01 20:05:41 47 Tiny change: '579)).\n\nScore distribution will be announced later.\n\nGood ' -> '579)).\n\nGood '
en9 English dreamoon_love_AA 2020-04-01 20:04:53 74
en8 English dreamoon_love_AA 2020-04-01 15:18:41 176
en7 English dreamoon_love_AA 2020-04-01 15:09:35 27 Tiny change: 'everyone! Codeforces Round #631 will be h' -> 'everyone! [contest:1329] will be h'
en6 English dreamoon_love_AA 2020-04-01 07:44:05 4 Tiny change: '20-04-01]). Except one ' -> '20-04-01]), except one '
en5 English dreamoon_love_AA 2020-04-01 07:43:33 5 Tiny change: '20-04-01] wing for testi' -> '20-04-01] for testi'
en4 English dreamoon_love_AA 2020-04-01 07:43:09 352
en3 English dreamoon_love_AA 2020-04-01 07:00:40 288
en2 English dreamoon_love_AA 2020-04-01 06:36:49 4 Tiny change: 'es Round #320 will be h' -> 'es Round #631 will be h'
en1 English dreamoon_love_AA 2020-04-01 06:36:30 109 Initial revision (saved to drafts)