Codeforces Round 872 (Div. 1 & 2)

Revision en45, by Artyom123, 2023-05-08 18:09:23

Hello Codeforces! (你好,代码部队)

We are glad to invite you to participate in Codeforces Round 872 (Div. 1) and Codeforces Round 872 (Div. 2) on 08.05.2023 15:05 (Московское время). Please note the unusual start time.

This round is rated for all the participants. You will be given 5 problems (one of which is divided into two subtasks) and 2 hours to solve them in each division.

Assume you are YuezhengLing, and in this round, your best friend LuoTianYi will give you several problems to solve.

(LuoTianYi is the left one and YuezhengLing is the right one)

We would like to thank:

  1. RedLycoris, CrTsIr, Gyy_cj, SanweiTreap and Atomic-Jellyfish for writing the problems.

  2. Artyom123 for coordinating the round.

  3. MikeMirzayanov for great Codeforces and Polygon platforms.

  4. He_Ren, orzdevinwang for our red suns testing the round.

  5. Qingyu, zimpha, themoon, Crying, rui_er, Kevin114514, Lynkcat, lgswdn, FreshP_0325, Umi for red testing the round.

  6. KbltQaQ, LHQing, Forever_Pursuit, NemanjaSo2005, geospiza, Kohaku, maoweishou, welleyth, EasonTAO, Rushroom, Gheal, rsj for orange testing the round.

  7. Error_Yuan, fishy15, Lyrically. valeriu, yash_0402, smokebellew for purple testing the round.

  8. LRL65, ayhan23, Zhangxuyang, Koful123, playerr17, AhmedEzzatG for blue testing the round.

  9. zhy137036 for green testing the round.

  10. tibinyte for gray testing the round.

  11. You

    for participating in this round.

UPD: Scoring distribution:

Div.1: 500 – (500+750) – 1750 – 2250 – 3000

Div.2: 500 – 1000 – 1500 – (1000+1250) – 2750

UPD: Editorial is available here

UPD: Winners!

Div 2:

Div 1:

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en45 English Artyom123 2023-05-08 18:09:23 366
en44 English Artyom123 2023-05-08 18:06:29 80
en43 English RedLycoris 2023-05-08 08:37:13 4 Tiny change: '– 1750 – 2000 – 3000\n' -> '– 1750 – 2250 – 3000\n'
en42 English RedLycoris 2023-05-08 07:45:08 178
en41 English RedLycoris 2023-05-07 03:11:49 1 (published)
en40 English RedLycoris 2023-05-06 17:00:03 18
en39 English RedLycoris 2023-05-06 07:32:14 2 Tiny change: ' platforms!\n\n4. [us' -> ' platforms.\n\n4. [us'
en38 English RedLycoris 2023-05-06 07:31:15 98
en37 English RedLycoris 2023-05-04 15:09:49 115
en36 English RedLycoris 2023-05-02 12:33:54 114
en35 English RedLycoris 2023-04-30 14:21:54 4
en34 English RedLycoris 2023-04-27 14:12:09 2 Tiny change: ',2023-02-05] for writ' -> ',2023-02-06] for writ'
en33 English RedLycoris 2023-04-27 14:11:35 6 Tiny change: 'uan,2023-04-22] for writ' -> 'uan,2023-02-05] for writ'
en32 English RedLycoris 2023-04-27 13:33:54 0 Tiny change: 'the round.\n\n6. [us' -> 'the round.EasonTAO\n\n6. [us'
en31 English RedLycoris 2023-04-26 06:10:48 28 Tiny change: '023-04-24] for oran' -> '023-04-24], [user:Rushroom] for oran'
en30 English RedLycoris 2023-04-26 06:10:20 37 Tiny change: '023-04-24], [user:syzf2222,2023-04-26], [user:] for red ' -> '023-04-24] for red '
en29 English RedLycoris 2023-04-26 06:09:29 2 Tiny change: 'e round.\n\n9. [<p c' -> 'e round.\n9. [<p c'
en28 English RedLycoris 2023-04-26 06:09:14 63
en27 English RedLycoris 2023-04-26 06:07:31 67
en26 English RedLycoris 2023-04-26 06:06:04 55
en25 English RedLycoris 2023-04-24 15:15:31 28 Tiny change: '023-04-22] for oran' -> '023-04-22], [user:EasonTao] for oran'
en24 English RedLycoris 2023-04-24 08:56:17 23 Tiny change: '023-04-22] for red ' -> '023-04-22], [user:yuu] for red '
en23 English RedLycoris 2023-04-23 17:25:56 7 Tiny change: '2], [user:sanwei,2023-04-2' -> '2], [user:SanweiTreap,2023-04-2'
en22 English RedLycoris 2023-04-23 13:14:02 13 Tiny change: '\n([user:loutianyi] is' -> '\n([user:luotianyi] is'
en21 English RedLycoris 2023-04-23 13:13:40 158
en20 English RedLycoris 2023-04-23 13:08:46 155
en19 English RedLycoris 2023-04-22 11:31:16 2 Tiny change: 'e round.\n\n8. [<p class=' -> 'e round.\n8.[<p class='
en18 English RedLycoris 2023-04-22 11:31:02 0 Tiny change: 'e round.\n\n8. [<p c' -> 'e round.\n8. [<p c'
en17 English RedLycoris 2023-04-22 11:30:36 1 Tiny change: '(/profile/ for parti' -> '(/profile/) for parti'
en16 English RedLycoris 2023-04-22 11:30:18 11 Tiny change: 'user user-master">You</p>]' -> 'user user-legendary">You</p>]'
en15 English RedLycoris 2023-04-22 11:30:01 11 Tiny change: 'user user-legendary">You</p>]' -> 'user user-master">You</p>]'
en14 English RedLycoris 2023-04-22 11:29:37 2
en13 English RedLycoris 2023-04-22 11:28:48 87
en12 English RedLycoris 2023-04-22 11:26:02 130
en11 English RedLycoris 2023-04-22 11:23:43 121
en10 English RedLycoris 2023-04-22 11:21:58 65
en9 English RedLycoris 2023-04-22 11:21:02 505
en8 English RedLycoris 2023-04-22 11:18:00 20
en7 English RedLycoris 2023-04-22 11:17:26 81
en6 English RedLycoris 2023-04-22 11:15:03 9
en5 English RedLycoris 2023-04-22 11:13:45 24
en4 English RedLycoris 2023-04-22 11:12:52 338
en3 English RedLycoris 2023-04-22 11:09:59 80
en2 English RedLycoris 2023-04-22 11:07:34 59
en1 English RedLycoris 2023-04-22 11:02:29 73 Initial revision (saved to drafts)