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Unofficial ACL Beginner Contest Editorial

Revision en43, by Spheniscine, 2020-10-01 17:22:45

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### F – Heights and Pairs

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#### History

Revisions

Rev. Lang. By When Δ Comment
en49 Spheniscine 2023-04-10 07:37:52 72 Tiny change: ') = \sum _ S (-1) ^ {k' -> ') = \sum _{k=0} ^N (-1) ^ {k'
en48 Spheniscine 2023-04-10 06:13:28 2 Tiny change: 'airs(N-k)$, note we d' -> 'airs(N-k)$; note we d'
en47 Spheniscine 2023-04-10 06:11:08 31
en46 Spheniscine 2023-04-10 06:10:41 64
en45 Spheniscine 2023-04-10 06:08:01 354
en44 Spheniscine 2023-04-10 06:06:06 2148 Necro-edit to problem F with a new explanation of PIE. Hopefully this is easier to understand than the [previous revision](https://codeforces.com/topic/83606/en43).
en43 Spheniscine 2020-10-01 17:22:45 2
en42 Spheniscine 2020-10-01 17:15:54 224
en41 Spheniscine 2020-10-01 06:33:51 4
en40 Spheniscine 2020-09-28 20:14:07 354
en39 Spheniscine 2020-09-28 08:55:27 18
en38 Spheniscine 2020-09-28 07:17:42 127
en37 Spheniscine 2020-09-28 03:49:49 6
en36 Spheniscine 2020-09-28 03:07:03 212
en35 Spheniscine 2020-09-27 16:46:37 92
en34 Spheniscine 2020-09-27 16:43:49 8
en33 Spheniscine 2020-09-27 16:42:02 26
en32 Spheniscine 2020-09-27 16:38:14 162
en31 Spheniscine 2020-09-27 16:33:24 403
en30 Spheniscine 2020-09-27 14:56:03 26
en29 Spheniscine 2020-09-27 13:45:55 3
en28 Spheniscine 2020-09-27 12:59:30 4
en27 Spheniscine 2020-09-27 12:56:43 43
en26 Spheniscine 2020-09-27 12:49:54 54
en25 Spheniscine 2020-09-27 12:48:55 706 (published)
en24 Spheniscine 2020-09-27 12:22:19 2414
en23 Spheniscine 2020-09-27 11:59:41 106
en22 Spheniscine 2020-09-27 11:56:26 160
en21 Spheniscine 2020-09-27 11:51:24 8
en20 Spheniscine 2020-09-27 11:49:37 83
en19 Spheniscine 2020-09-27 11:46:48 461
en18 Spheniscine 2020-09-27 11:38:00 1233
en17 Spheniscine 2020-09-27 11:11:24 81
en16 Spheniscine 2020-09-27 11:08:04 22
en15 Spheniscine 2020-09-27 10:52:14 10
en14 Spheniscine 2020-09-27 10:51:32 8
en13 Spheniscine 2020-09-27 10:49:12 1
en12 Spheniscine 2020-09-27 10:44:18 9
en11 Spheniscine 2020-09-27 10:37:55 4967
en10 Spheniscine 2020-09-27 09:21:45 530 Tiny change: 'L_bad(1)}|\n</spoile' -> 'L_bad(1)}|$\n</spoile' en9 Spheniscine 2020-09-27 08:47:07 587 en8 Spheniscine 2020-09-27 08:31:38 7 Tiny change: 'n$ pairs (either good or ba' -> 'n$pairs (good or ba' en7 Spheniscine 2020-09-27 08:07:31 5 en6 Spheniscine 2020-09-27 08:06:35 660 en5 Spheniscine 2020-09-27 07:50:06 780 Tiny change: ' way:\n\n$a = x+y\\\n= x+y+z\$\n</spoil' -> ' way:\n\n$$a = x+y\\\n= x+y+z$$\n</spoil'
en4 Spheniscine 2020-09-27 07:33:17 63
en3 Spheniscine 2020-09-27 07:31:53 1068
en2 Spheniscine 2020-09-27 07:30:59 1262 Tiny change: 'e AtCoder implement' -> 'e AtCoder DSU implement'
en1 Spheniscine 2020-09-27 07:17:19 4912 Initial revision (saved to drafts)