Codeforces Round #647 — Thanks, Algo Muse!

Revision en24, by Anadi, 2020-06-05 11:56:32

Hello Codeforces!

We have a pleasure to invite you to Codeforces Round #647 (Div. 1) and Codeforces Round #647 (Div. 2). This round will take place on Jun/04/2020 17:35 (Moscow time). In both divisions, you will have 2.5 hours to solve 6 problems. Three of them will be shared.

The problems for this round were prepared by MicGor, Grzmot, Okrut and me.

We would like to thank everyone who made this round possible:

We hope you will enjoy the problem set! Good luck!

UPD: Score distribution:

• Div 1: $500$ $-$ $1250$ $-$ $2000$ $-$ $2500$ $-$ $3000$ $-$ $3500$
• Div 2: $500$ $-$ $1000$ $-$ $1500$ $-$ $2000$ $-$ $2750$ $-$ $3500$

UPD: Editorial

UPD: Congratulations to the winners!

Div. 1:

Div. 2

Below is a message for you from MikeMirzayanov:

With this round, we want to say thank you to Algo Muse for the significant contribution and support!

Algo Muse is an educational site that conducts online algorithmic contests in pen-and-paper style (no coding). It was originally started to help students prepare for theory qualifiers for graduate admissions. At present, the problems have a broader appeal, though occasionally an odd problem may require knowledge of linear algebra, probability, or group theory. The website is maintained by former students of IIT Bombay. To find out more, visit their website or their twitter account.

#### History

Revisions

Rev. Lang. By When Δ Comment
en24 Anadi 2020-06-05 11:56:32 1 Tiny change: 'he winners**\n\nDiv.' -> 'he winners!**\n\nDiv.'
en23 Anadi 2020-06-05 11:55:36 368 Tiny change: 'n- [user: _khushi_]\n- [use' -> 'n- [user: \_khushi\_]\n- [use'
en22 Anadi 2020-06-04 20:37:00 65
en21 Anadi 2020-06-03 17:38:49 119 Tiny change: ' - Div 1: 500\n - Div 2' -> ' - Div 1: $500$ -- $1250$\n - Div 2' (published)
en20 Anadi 2020-06-03 17:30:53 59 Tiny change: ' luck!\n\n\nBelo' -> ' luck!\n\n**UPD: Score distribution:**\n\n\nBelo' (saved to drafts)
en19 Anadi 2020-06-03 11:44:44 26 Tiny change: '020-06-02] for taki' -> '020-06-02], [user: HIR180] for taki'
en18 Anadi 2020-06-02 20:43:49 0 (published)
en17 Anadi 2020-06-02 20:43:36 178 (saved to drafts)
en16 Una_Shem 2020-06-02 16:16:51 19
en15 Una_Shem 2020-06-02 16:11:54 0 (published)
en14 Una_Shem 2020-06-02 16:11:40 4 Tiny change: 'account._ ' -> 'account._ \n\n' (saved to drafts)
en13 Anadi 2020-06-02 16:08:58 0 (published)
en12 Anadi 2020-06-02 16:07:04 4
en11 Anadi 2020-06-02 16:04:57 6
en10 Una_Shem 2020-06-02 15:14:16 2
en9 Una_Shem 2020-06-02 14:57:49 11
en8 Una_Shem 2020-06-02 14:55:17 140
en7 Una_Shem 2020-06-02 14:52:37 931
en6 Anadi 2020-06-02 13:05:21 21
en5 Anadi 2020-06-02 12:40:44 10 Tiny change: 'dvice and testing\n' -> 'dvice and extensive testing\n'
en4 Anadi 2020-06-02 12:30:55 12 Tiny change: 'ble advice\n\n- [use' -> 'ble advice and testing\n\n- [use'
en3 Anadi 2020-06-02 12:26:36 204
en2 Anadi 2020-06-02 12:21:24 38
en1 Anadi 2020-06-02 12:20:23 1238 Initial revision (saved to drafts)