Please subscribe to the official Codeforces channel in Telegram via the link https://t.me/codeforces_official. ×

Codeforces Round 955 (Div. 2, with prizes from NEAR!)

Revision en8, by MikeMirzayanov, 2024-06-22 13:07:55

Hello, Codeforces!

It's been a long journey, and I'm finally pleased to invite you to participate in our Codeforces Round 955 (Div. 2, with prizes from NEAR!), which will take place on Jun/25/2024 17:35 (Moscow time).

This round will be rated for all participants with a rating of 2100 or below. Participants with higher ratings can participate out of competition.

During the round, you will need to solve 6 problems. You will have 2 hours to solve them.

The problems for the round were prepared by nik1998, egor4444ik, iamdimonis and me.

We sincerely thank everyone who provided invaluable assistance in preparing this round:

We are pleased to announce that NEAR has supported the round!

NEAR was founded in 2017 by Illia Polosukhin, one of the creators of Transformers, and Alex Skidanov as an attempt to build an artificial system capable of solving competitive programming problems. You can read more about that attempt here.

Ultimately, NEAR pivoted into building a blockchain protocol, which it launched in 2020.

This year, NEAR started NEAR.AI, a new lab with a mission to build AI systems that are open and available to everyone, instead of being controlled by a few mega-corporations.

One of the areas of focus is making models capable of reasoning reliably, and for that, competitive programming problems provide a great environment. To help us build it, we invite all the Russian-speaking members of the Codeforces community with a rating of Specialist or higher (1400+) to help us annotate step-by-step explanations of solutions to competitive programming problems. We want to annotate a very large set of problems of all difficulty levels, and pay relatively high rewards in NEAR per annotation. Don't speak Russian but speak English? Stay tuned here, we will be launching the same project for English-speaking people very soon, and will likely sponsor another round when it happens.

The round also features prizes in NEAR. Participants who rank in the top 16 will receive Ⓝ 16 each. The next 32 participants in the overall ranking (including unofficial participants) will receive Ⓝ 8 each. The following 64 participants will receive Ⓝ 4 each; the subsequent 128 participants will receive Ⓝ 2 each, and finally, the next 256 participants will receive Ⓝ 1 each.

Additionally, 64 random participants from the top 4096 in the overall ranking will each receive Ⓝ 4.

Score distribution: $$$500\,—\,1000\,—\,1250\,—\,1750\,—\,2500\,—\,3250$$$

Wishing everyone good luck and high ratings!

UPD: Let's continue the series of announcements with a photo of the authors :)

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en19 English FelixArg 2024-06-25 23:36:23 0 (published)
ru27 Russian FelixArg 2024-06-25 23:36:13 0 (опубликовано)
en18 English FelixArg 2024-06-25 23:35:42 136 Tiny change: '06-25]\n\nWonderful ' -> '06-25]\n\n<b>UPD 4</b>: Wonderful ' (saved to drafts)
ru26 Russian FelixArg 2024-06-25 23:34:18 132 (сохранено в черновиках)
en17 English FelixArg 2024-06-25 20:32:29 7 (published)
ru25 Russian FelixArg 2024-06-25 20:31:57 0 (опубликовано)
ru24 Russian FelixArg 2024-06-25 20:31:21 416 (сохранено в черновиках)
en16 English FelixArg 2024-06-25 20:30:23 416 (saved to drafts)
en15 English FelixArg 2024-06-25 20:17:07 72
ru23 Russian FelixArg 2024-06-25 20:16:39 69
en14 English FelixArg 2024-06-24 22:20:27 4 Tiny change: '&mdash;\,3250$\n\nWish' -> '&mdash;\,3000$\n\nWish'
ru22 Russian FelixArg 2024-06-24 22:20:07 4 Мелкая правка: '&mdash;\,3250$\n\nЖела' -> '&mdash;\,3000$\n\nЖела'
ru21 Russian FelixArg 2024-06-24 20:19:34 0 (опубликовано)
en13 English FelixArg 2024-06-24 20:19:20 30 Tiny change: '024-06-24]' -> '024-06-24], [user:TheScrasse,2024-06-24]'
ru20 Russian FelixArg 2024-06-24 20:18:49 30 Мелкая правка: '024-06-24]' -> '024-06-24], [user:TheScrasse,2024-06-24]' (сохранено в черновиках)
en12 English FelixArg 2024-06-24 18:57:33 0 (published)
ru19 Russian FelixArg 2024-06-24 18:57:21 0 (опубликовано)
en11 English FelixArg 2024-06-24 18:56:54 4 Tiny change: '&mdash;\,1250\,&mdash;' -> '&mdash;\,1000\,&mdash;' (saved to drafts)
ru18 Russian FelixArg 2024-06-24 18:56:32 4 Мелкая правка: '&mdash;\,1250\,&mdash;' -> '&mdash;\,1000\,&mdash;' (сохранено в черновиках)
ru17 Russian FelixArg 2024-06-24 16:02:32 0 (опубликовано)
en10 English FelixArg 2024-06-24 16:02:08 91
ru16 Russian FelixArg 2024-06-24 16:00:41 91 (сохранено в черновиках)
en9 English FelixArg 2024-06-24 13:30:48 17 Tiny change: ' a rating of <b>2100 or below</b>. Part' -> ' a rating is <b>below 2100</b>. Part'
ru15 Russian Vladosiya 2024-06-23 16:18:47 73
en8 English MikeMirzayanov 2024-06-22 13:07:55 288
ru14 Russian MikeMirzayanov 2024-06-22 13:04:27 54
en7 English FelixArg 2024-06-22 10:44:32 65
ru13 Russian FelixArg 2024-06-22 10:43:48 69
en6 English FelixArg 2024-06-22 09:42:15 0 (published)
ru12 Russian FelixArg 2024-06-22 09:37:07 0 (опубликовано)
en5 English FelixArg 2024-06-22 09:35:46 12
en4 English FelixArg 2024-06-22 09:32:39 28 Tiny change: '024-06-21]' -> '024-06-21], [user:redpanda,2024-06-21]'
ru11 Russian FelixArg 2024-06-22 09:32:00 28 Мелкая правка: '024-06-21]' -> '024-06-21], [user:redpanda,2024-06-21]'
en3 English FelixArg 2024-06-22 09:30:56 1626
ru10 Russian FelixArg 2024-06-22 09:29:16 1609
en2 English FelixArg 2024-06-22 09:19:09 111
ru9 Russian FelixArg 2024-06-22 09:18:11 1 Мелкая правка: 'ash;\,3250;$\n\nЖелае' -> 'ash;\,3250$\n\nЖелае'
ru8 Russian FelixArg 2024-06-22 09:17:55 40
ru7 Russian FelixArg 2024-06-22 09:16:48 65
ru6 Russian FelixArg 2024-06-22 09:14:32 70
ru5 Russian FelixArg 2024-06-22 09:12:44 95
en1 English FelixArg 2024-06-22 09:12:11 2349 Initial revision for English translation (saved to drafts)
ru4 Russian FelixArg 2024-06-21 23:32:58 1 Мелкая правка: 'й из задач</li>\n<li' -> 'й из задач.</li>\n<li'
ru3 Russian FelixArg 2024-06-21 23:20:56 1 Мелкая правка: 'олгий путь и я, нако' -> 'олгий путь, и я, нако'
ru2 Russian FelixArg 2024-06-21 23:10:26 2 Мелкая правка: 'й путь и я наконец рад пригл' -> 'й путь и я, наконец, рад пригл'
ru1 Russian FelixArg 2024-06-21 23:06:30 2464 Первая редакция (сохранено в черновиках)