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 May/08/2023 15:05 (Moscow time). 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 GeZhiyuan 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, Yuu for red testing the round.

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

7. Error_Yuan, fishy15, Lyrically. valeriu, yash_0402, smoke_bellew 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 Artyom123 2023-05-08 18:09:23 366
en44 Artyom123 2023-05-08 18:06:29 80
en43 RedLycoris 2023-05-08 08:37:13 4 Tiny change: '– 1750 – 2000 – 3000\n' -> '– 1750 – 2250 – 3000\n'
en42 RedLycoris 2023-05-08 07:45:08 178
en41 RedLycoris 2023-05-07 03:11:49 1 (published)
en40 RedLycoris 2023-05-06 17:00:03 18
en39 RedLycoris 2023-05-06 07:32:14 2 Tiny change: ' platforms!\n\n4. [us' -> ' platforms.\n\n4. [us'
en38 RedLycoris 2023-05-06 07:31:15 98
en37 RedLycoris 2023-05-04 15:09:49 115
en36 RedLycoris 2023-05-02 12:33:54 114
en35 RedLycoris 2023-04-30 14:21:54 4
en34 RedLycoris 2023-04-27 14:12:09 2 Tiny change: ',2023-02-05] for writ' -> ',2023-02-06] for writ'
en33 RedLycoris 2023-04-27 14:11:35 6 Tiny change: 'uan,2023-04-22] for writ' -> 'uan,2023-02-05] for writ'
en32 RedLycoris 2023-04-27 13:33:54 0 Tiny change: 'the round.\n\n6. [us' -> 'the round.EasonTAO\n\n6. [us'
en31 RedLycoris 2023-04-26 06:10:48 28 Tiny change: '023-04-24] for oran' -> '023-04-24], [user:Rushroom] for oran'
en30 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 RedLycoris 2023-04-26 06:09:29 2 Tiny change: 'e round.\n\n9. [<p c' -> 'e round.\n9. [<p c'
en28 RedLycoris 2023-04-26 06:09:14 63
en27 RedLycoris 2023-04-26 06:07:31 67
en26 RedLycoris 2023-04-26 06:06:04 55
en25 RedLycoris 2023-04-24 15:15:31 28 Tiny change: '023-04-22] for oran' -> '023-04-22], [user:EasonTao] for oran'
en24 RedLycoris 2023-04-24 08:56:17 23 Tiny change: '023-04-22] for red ' -> '023-04-22], [user:yuu] for red '
en23 RedLycoris 2023-04-23 17:25:56 7 Tiny change: '2], [user:sanwei,2023-04-2' -> '2], [user:SanweiTreap,2023-04-2'
en22 RedLycoris 2023-04-23 13:14:02 13 Tiny change: '\n([user:loutianyi] is' -> '\n([user:luotianyi] is'
en21 RedLycoris 2023-04-23 13:13:40 158
en20 RedLycoris 2023-04-23 13:08:46 155
en19 RedLycoris 2023-04-22 11:31:16 2 Tiny change: 'e round.\n\n8. [<p class=' -> 'e round.\n8.[<p class='
en18 RedLycoris 2023-04-22 11:31:02 0 Tiny change: 'e round.\n\n8. [<p c' -> 'e round.\n8. [<p c'
en17 RedLycoris 2023-04-22 11:30:36 1 Tiny change: '(/profile/ for parti' -> '(/profile/) for parti'
en16 RedLycoris 2023-04-22 11:30:18 11 Tiny change: 'user user-master">You</p>]' -> 'user user-legendary">You</p>]'
en15 RedLycoris 2023-04-22 11:30:01 11 Tiny change: 'user user-legendary">You</p>]' -> 'user user-master">You</p>]'
en14 RedLycoris 2023-04-22 11:29:37 2
en13 RedLycoris 2023-04-22 11:28:48 87
en12 RedLycoris 2023-04-22 11:26:02 130
en11 RedLycoris 2023-04-22 11:23:43 121
en10 RedLycoris 2023-04-22 11:21:58 65
en9 RedLycoris 2023-04-22 11:21:02 505
en8 RedLycoris 2023-04-22 11:18:00 20
en7 RedLycoris 2023-04-22 11:17:26 81
en6 RedLycoris 2023-04-22 11:15:03 9
en5 RedLycoris 2023-04-22 11:13:45 24
en4 RedLycoris 2023-04-22 11:12:52 338
en3 RedLycoris 2023-04-22 11:09:59 80
en2 RedLycoris 2023-04-22 11:07:34 59
en1 RedLycoris 2023-04-22 11:02:29 73 Initial revision (saved to drafts)