Codeforces Round #810 Editorial

Revision en8, by Rhodoks, 2022-07-25 11:55:32

Sorry for the late editorial. May this editorial help you. If you have questions, feel free to ask.

1711A - Perfect Permutation

hint1.
solution
code

1711B - Party

hint1.
hint2.
solution

1710A - Color the Picture

hint1.
hint2.
solution

1710B - Rain

hint1.
hint2.
hint3.
solution

1710C - XOR Triangle

hint1.
hint2.
solution

1710D - Recover the Tree

Thank dario2994, the key part of the proof is from him.

hint1
hint2
hint3
solution

1210E - Wojtek and Card Tricks

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hint2.
hint3.
solution

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en21 English Rhodoks 2022-07-29 17:45:36 78
en20 English Rhodoks 2022-07-29 17:37:19 125
en19 English Rhodoks 2022-07-28 05:58:51 30 Tiny change: 'en $\sum_{i=1}^{n} \lfloor ' -> 'en $\sum_{a_i \geq 2*m} \lfloor '
en18 English Rhodoks 2022-07-26 07:56:12 0 (published)
en17 English Rhodoks 2022-07-26 07:53:05 261 (saved to drafts)
en16 English Rhodoks 2022-07-25 13:31:12 14 Tiny change: 'ly if $p_j-|x_i-x_j| >= p_i-m$.\n\nOn' -> 'ly if $p_i-|x_i-j| \geq a_j-m$.\n\nOn'
en15 English Rhodoks 2022-07-25 12:23:12 6 Tiny change: ' then $A \union B$ is goo' -> ' then $A \cup B$ is goo'
en14 English Rhodoks 2022-07-25 12:18:19 0 (published)
en13 English Rhodoks 2022-07-25 12:13:06 70
en12 English Rhodoks 2022-07-25 12:10:10 2 Tiny change: '[problem:1210E]\n\n<s' -> '[problem:1710E]\n\n<s'
en11 English Rhodoks 2022-07-25 12:09:44 20
en10 English Rhodoks 2022-07-25 12:05:53 38
en9 English Rhodoks 2022-07-25 12:05:21 6173
en8 English Rhodoks 2022-07-25 11:55:32 6538
en7 English Rhodoks 2022-07-25 11:44:35 1023
en6 English Rhodoks 2022-07-25 11:18:49 205
en5 English Rhodoks 2022-07-25 11:14:54 3601 Tiny change: 't \cup I_i¥\n\n</spoi' -> 't \cup I_i\n\n</spoi'
en4 English Rhodoks 2022-07-25 00:37:54 23
en3 English Rhodoks 2022-07-25 00:28:39 1761
en2 English Rhodoks 2022-07-25 00:24:26 1933
en1 English Rhodoks 2022-07-25 00:21:28 1379 Initial revision (saved to drafts)