Polynomial Round 2022 (Div. 1 + Div. 2) Editorial

Revision en20, by ChthollyNotaSeniorious, 2022-12-17 21:16:25

Thanks for your participation! I am so sorry for my careless review. We were preparing for this round for many months and made some problems which writers and testers are all like. We do want to give everyone a gold time to enjoy the contest. But carelessness is deadly. In problem B, some test cases should have been made, but we missed them in not only the pretests but also the final tests. In fact, we had not noticed it until some suspicious hacks appeared. I and all co-authors sincerely regret our mistake and hope you can forgive us.

Besides, few people are cyberbullying authors, please do not do so. If you have a bad experience, you can downvote me because of our fault.

1774A - Add Plus Minus Sign
Idea: Cirno_9baka

Solution
Code

1774B - Coloring
Idea: Cirno_9baka

Solution
Code

1774C - Ice and Fire
Idea: Little09

Solution
Code

1774D - Same Count One
Idea: mejiamejia and AquaMoon

Solution
Code

1774E - Two Chess Pieces
Idea: Cirno_9baka

Solution
Code

1774F1 - Magician and Pigs (Easy Version)
Idea: Little09

Solution
Code

1774F2 - Magician and Pigs (Hard Version)
Idea: Little09

Solution
Code

1774G - Segment Covering
Idea: ChthollyNotaSeniorious and JianfengZhu

Hint 1
Hint 2
Solution
Code

1774H - Maximum Permutation
Idea: Ecrade_ To be added...

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en29 English ChthollyNotaSeniorious 2022-12-18 11:18:00 2 Tiny change: 'nd let $j++$. when on' -> 'nd let $j+1$. when on'
en28 English ChthollyNotaSeniorious 2022-12-18 10:31:30 106 Tiny change: 'has $sum/n 1$s. Becau' -> 'has $sum/n$ $1$s. Becau'
en27 English ChthollyNotaSeniorious 2022-12-18 04:39:48 7648
en26 English ChthollyNotaSeniorious 2022-12-18 04:32:22 0 (published)
en25 English ChthollyNotaSeniorious 2022-12-18 04:32:01 368 (saved to drafts)
en24 English ChthollyNotaSeniorious 2022-12-17 21:44:53 10 Tiny change: 'ac{sum}{n}$ $1$s. Becau' -> 'ac{sum}{n}\ 1$s. Becau'
en23 English ChthollyNotaSeniorious 2022-12-17 21:19:00 2 Tiny change: 'ryone a gold time to ' -> 'ryone a good time to '
en22 English ChthollyNotaSeniorious 2022-12-17 21:17:53 0 (published)
en21 English ChthollyNotaSeniorious 2022-12-17 21:16:43 2 Tiny change: '2-12-17]\nTo be ad' -> '2-12-17]\n\nTo be ad'
en20 English ChthollyNotaSeniorious 2022-12-17 21:16:25 2 Tiny change: '2-12-17]\n\nTo be ad' -> '2-12-17]\nTo be ad'
en19 English ChthollyNotaSeniorious 2022-12-17 21:16:07 90 Tiny change: 'fault.\n\nProblem A \nIdea: ' -> 'fault.\n\n[problem:1774A] \nIdea: '
en18 English ChthollyNotaSeniorious 2022-12-17 21:14:43 18 Tiny change: '022-12-17]' -> '022-12-17]\n\nTo be added...'
en17 English ChthollyNotaSeniorious 2022-12-17 21:14:24 44 Tiny change: 'oiler>\n\n' -> 'oiler>\n\nProblem H \nIdea: [user:Ecrade_,2022-12-17]'
en16 English ChthollyNotaSeniorious 2022-12-17 21:11:33 345
en15 English ChthollyNotaSeniorious 2022-12-17 20:54:24 309
en14 English ChthollyNotaSeniorious 2022-12-17 20:31:46 19
en13 English ChthollyNotaSeniorious 2022-12-17 20:31:04 12428
en12 English ChthollyNotaSeniorious 2022-12-17 14:25:55 48
en11 English ChthollyNotaSeniorious 2022-12-17 14:24:25 21
en10 English ChthollyNotaSeniorious 2022-12-17 14:22:55 4056
en9 English ChthollyNotaSeniorious 2022-12-17 14:11:30 2012
en8 English ChthollyNotaSeniorious 2022-12-17 11:17:09 1125
en7 English ChthollyNotaSeniorious 2022-12-17 10:43:56 452
en6 English ChthollyNotaSeniorious 2022-12-16 17:27:15 346 Tiny change: 'roblem A\nIdea: [u' -> 'roblem A\n\nIdea: [u'
en5 English ChthollyNotaSeniorious 2022-12-16 13:17:33 2 Tiny change: 'roblem A\n\nIdea: [u' -> 'roblem A\nIdea: [u'
en4 English ChthollyNotaSeniorious 2022-12-16 13:17:11 31
en3 English ChthollyNotaSeniorious 2022-12-16 12:25:06 539
en2 English ChthollyNotaSeniorious 2022-12-16 12:10:45 224 Tiny change: 'ation!\n\n' -> 'ation!\n\n::spoiler\nqwq\n::'
en1 English ChthollyNotaSeniorious 2022-12-16 12:02:06 87 Initial revision (saved to drafts)