Codeforces Round 1085 (Div. 1 + Div. 2)
Разница между en21 и en22, 109 символ(ов) изменены
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            <a href="https://www.youtube.com/watch?v=1bvDHAUv2ak">Gusty Garden Galaxy — Mahito Yokota, Super Mario Galaxy</a>↵
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Hello, Codeforces!↵
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[user:IceSerpent,2026-03-04] and I are pleased to invite you to [contest:2207] on [contest_time:2207]! While some of us will be turning our clocks an hour forward for daylight savings, our theme will turn it way back to the **2010s**. ↵
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You will be given $8$ problems to solve in $3$ hours. Note that some of these problems are further divided into subtasks. Some of the problems may be interactive, so please read the [guide for interactive problems](https://mirror.codeforces.com/blog/entry/45307) if you are not familiar with them. The scoring distribution is as follows:↵
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<p style="text-align:center">$\ \ \ \,$↵
<img width="5%" src="/predownloaded/10/06/10061397c60c77098fd28b0fa0d246ed7df86e5e.png">$\ $↵
<img width="5%" src="/predownloaded/40/fc/40fc1a5591e005935d8f74e94f219a80527062ba.png">$\ \,$↵
<img width="5%" src="/predownloaded/a8/43/a8436108f91a00313f8fb5ac4908c9540f7a5081.png">$\,$↵
<img width="6%" src="/predownloaded/8d/59/8d592bef953eaf66c6371fcbeb404feadf7d68bf.png">$\quad\ \ \ \ \,$↵
<img width="5%" src="/predownloaded/4e/a4/4ea4e6432273835877eab76af28bebec4ca7a808.png">$\quad\ \ \ \ \ \,$↵
<img width="5%" src="/predownloaded/b4/4d/b44d72d44fd28408e6b885d3c045e2992d39acc2.png">$\ \ $↵
<img width="5%" src="/predownloaded/5a/74/5a74c232f56d60f74fb87e43e702df6359401018.png">$\qquad\ \ \ \ \ \ \ \,$↵
<img width="5%" src="/predownloaded/d9/54/d954f65446010f85e53873aaf50440c308726884.png">$\qquad\quad\ \ \ \ \ \ \ \ $</p>↵
$$750 - 1250 - 1500 - 2250 - (1750 + 1000) - 3250 - 3750 - (3250 + 1000 + 1500)$$↵
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The problems of this round were authored by [user:IceSerpent,2026-03-04] and myself, [user:awang11,2026-03-05]. In addition, we would like to thank:↵
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- [user:244mhq,2026-03-04] for his excellent coordination of the round and translating the problems to Russian;↵
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- [user:Um_nik,2026-03-05] for pre-reviewing the round;↵
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- [user:flummoxedfeline,2026-03-05] for providing beautiful illustrations;↵
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- our army of testers, for their invaluable feedback and eagerness to testsolve: [user:Um_nik,2026-03-04], [user:shcal,2026-03-04], [user:awesomeguy856,2026-03-04], [user:Extile,2026-03-04], [user:Noobish_Monk,2026-03-04], [user:__baozii__,2026-03-04], [user:Amazed,2026-03-04], [user:SomethingNew,2026-03-04], [user:awoo,2026-03-04], [user:-firefly-,2026-03-04], [user:ink31930,2026-03-04], [user:nik_exists,2026-03-04], [user:chromate00,2026-03-04], [user:cduckling,2026-03-04], [user:madlogic,2026-03-04], [user:Hori,2026-03-04], [user:misteg168,2026-03-04], [user:Dominater069,2026-03-04], [user:errorgorn,2026-03-06], [user:defnotmee,2026-03-06];↵
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- and of course [user:MikeMirzayanov,2026-03-04] and [user:KAN,2026-03-05] for the Codeforces and Polygon platforms.↵
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**UPD 1:** The scoring distribution has been released!↵
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**UPD 2:** Editorial is released at https://mirror.codeforces.com/blog/entry/151886. Hope you enjoyed the round!

История

 
 
 
 
Правки
 
 
  Rev. Язык Кто Когда Δ Комментарий
en23 Английский awang11 2026-03-08 23:41:28 767 Tiny change: 'UPD 3:** Top 10 and first clears!\n\n**Di' -> 'UPD 3:** The results!\n\n**Di'
en22 Английский awang11 2026-03-08 20:37:20 109
en21 Английский awang11 2026-03-06 04:03:05 68
en20 Английский awang11 2026-03-05 22:28:15 1014 Tiny change: '\ \ \ \ \ $\n<img wi' -> '\ \ \ \ \ \,$\n<img wi'
en19 Английский awang11 2026-03-05 17:36:22 0 (published)
en18 Английский awang11 2026-03-05 17:34:56 977 Tiny change: '26-03-04] for the ' -> '26-03-04] and [user:KAN] for the '
en17 Английский awang11 2026-03-05 15:47:09 8
en16 Английский awang11 2026-03-05 15:38:01 7 Tiny change: 'given $8$ or $9$ problems' -> 'given $8$ problems'
en15 Английский awang11 2026-03-05 04:54:23 2 Tiny change: ' 3750 - (3250 + 750 + ' -> ' 3750 - (3500 + 750 + '
en14 Английский awang11 2026-03-05 04:54:02 8 Tiny change: 'e.png">$\ \,$\n<img wi' -> 'e.png">$\ $\n<img wi'
en13 Английский awang11 2026-03-05 04:45:56 1913
en12 Английский awang11 2026-03-05 04:45:25 351 Tiny change: 'ng">$\quad \ \ ' -> 'ng">$\quad\quad \ \ '
en11 Английский awang11 2026-03-05 04:32:48 336 Tiny change: 'mg width="6%" src="/p' -> 'mg width="5%" src="/p'
en10 Английский awang11 2026-03-05 04:21:07 110 Tiny change: '6e5e.png">\n<img wid' -> '6e5e.png">$\ \ \ \,$\n<img wid'
en9 Английский awang11 2026-03-05 04:15:10 291 Tiny change: 'mg width="25%" src="/p' -> 'mg width="50%" src="/p'
en8 Английский awang11 2026-03-05 03:53:29 27 Tiny change: 'and myself. In addit' -> 'and myself, [user:awang11]. In addit'
en7 Английский awang11 2026-03-05 03:53:01 25 Tiny change: 'tribution is as follows:\n\nThe pr' -> 'tribution will be announced soon.\n\nThe pr'
en6 Английский awang11 2026-03-05 03:51:39 549 Tiny change: 'e given $8 - 9$ problem' -> 'e given $8$ or $9$ problem'
en5 Английский awang11 2026-03-05 03:47:06 124 Tiny change: 'mg width="25%" src="/p' -> 'mg width="50%" src="/p'
en4 Английский awang11 2026-03-05 03:44:21 293
en3 Английский awang11 2026-03-04 22:47:13 62
en2 Английский awang11 2026-03-04 22:45:41 55
en1 Английский awang11 2026-03-04 18:54:00 2494 Initial revision (saved to drafts)