Codeforces Round 907 (Div. 2)

#	User	Rating
1	tourist	3690
2	jiangly	3647
3	Benq	3581
4	orzdevinwang	3570
5	Geothermal	3569
5	cnnfls_csy	3569
7	Radewoosh	3509
8	ecnerwala	3486
9	jqdai0815	3474
10	gyh20	3447

#	User	Contrib.
1	maomao90	174
2	awoo	164
3	adamant	163
4	TheScrasse	159
5	nor	157
6	maroonrk	156
7	-is-this-fft-	152
8	Petr	146
8	orz	146
10	BledDest	145

Hello, Codeforces!

I'm (127.0.0.1), max0000561 and a.nasretdinov to invite you to our Codeforces Round 907 (Div. 2), which will be held at Oct/30/2023 17:35 (Moscow time). The round will be rated for all the participants with rating strictly less than 2100.

On behalf of our team, I want to thank:

Coordinator 74TrAkToR for invaluable help in preparing the round.
Testers maomao90, LeoPro, SomethingNew, maks_matiupatenko, max0000561, yaroslav_n, glebustim, Vash_nick, Murinh0, Topperoo, Alarick, priyanshu.p, Greg908, buffering, ventilator13, medved, zwezdinv, Rodionno for high-quality testing of the round and useful feedbacks!
medved for excellent translations of the problems into English.
And special thanks to my friends who have made a huge contribution to this round: Amir a.nasretdinov Nasretdinov, Maksim max0000561 Krylykov и Tanya medved Medved. Also thank you for all four years of friendship:)
MikeMirzayanov for amazing Codeforces and Polygon platforms.

Good luck and, please, read the statements of all problems!

Score distribution: $$$500-750-1000-1500-2000-2250$$$

Rev.	By	When	Δ	Comment
ru13	127.0.0.1	2023-10-31 16:53:10	4
en15	127.0.0.1	2023-10-31 16:52:39	44	Tiny change: 'he winners:\n\n<b>Div' -> 'he winners!\n\n<b>Div' (published)
ru12	127.0.0.1	2023-10-31 16:51:10	0	(опубликовано)
ru11	127.0.0.1	2023-10-31 16:50:05	554
en14	127.0.0.1	2023-10-31 16:39:30	40
en13	127.0.0.1	2023-10-31 16:37:37	12	Tiny change: ' out. \n\nCongratula' -> ' out. \n\n<b>UPD:</b> Congratula'
en12	127.0.0.1	2023-10-31 16:36:42	22	Tiny change: 'tyle-type:square">\n <li' -> 'tyle-type:enumerate">\n <li'
en11	127.0.0.1	2023-10-31 16:33:02	250
en10	127.0.0.1	2023-10-31 16:29:15	503	(saved to drafts)
ru10	127.0.0.1	2023-10-31 16:19:55	16	Мелкая правка: 'бликован. ' -> 'бликован. \n\n<b>UPD:</b> ' (сохранено в черновиках)
en9	127.0.0.1	2023-10-30 21:25:50	0	(published)
ru9	127.0.0.1	2023-10-30 21:25:31	0	(опубликовано)
en8	127.0.0.1	2023-10-30 21:24:46	78	(saved to drafts)
ru8	127.0.0.1	2023-10-30 21:24:08	80	(сохранено в черновиках)
ru7	127.0.0.1	2023-10-26 22:34:58	13	Мелкая правка: '10-26] за прекрасные переводы' -> '10-26] за хорошие переводы'
en7	127.0.0.1	2023-10-26 22:30:27	195
ru6	127.0.0.1	2023-10-26 22:29:34	191
en6	127.0.0.1	2023-10-26 21:19:54	179
ru5	127.0.0.1	2023-10-26 21:18:13	163
en5	127.0.0.1	2023-10-26 19:39:44	59
ru4	127.0.0.1	2023-10-26 19:38:00	40
en4	127.0.0.1	2023-10-26 18:23:06	4	Tiny change: ' Krylykov и Tanya [us' -> ' Krylykov and Tanya [us'
en3	127.0.0.1	2023-10-26 18:19:33	0	(published)
ru3	127.0.0.1	2023-10-26 18:14:47	0	(опубликовано)
en2	127.0.0.1	2023-10-26 17:59:09	23	Tiny change: '0</b>.\n\nI want to ' -> '0</b>.\n\nOn behalf of our team, I want to '
en1	127.0.0.1	2023-10-26 17:56:51	1664	Initial revision for English translation (saved to drafts)
ru2	127.0.0.1	2023-10-26 17:34:51	4	Мелкая правка: 'ем вас на [contest:' -> 'ем вас на наш [contest:'
ru1	127.0.0.1	2023-10-26 17:31:04	1643	Первая редакция (сохранено в черновиках)

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