Atcoder 279G-At most 2 colors: Generating functions.

→ Pay attention

Before contest
CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
41:47:59
Register now »

*has extra registration

→ Top rated

#	User	Rating
1	tourist	4009
2	jiangly	3823
3	Benq	3738
4	Radewoosh	3633
5	jqdai0815	3620
6	orzdevinwang	3529
7	ecnerwala	3446
8	Um_nik	3396
9	ksun48	3390
10	gamegame	3386

Countries | Cities | Organizations

View all →

→ Top contributors

#	User	Contrib.
1	cry	167
2	Um_nik	163
3	maomao90	162
3	atcoder_official	162
5	adamant	159
6	-is-this-fft-	158
7	awoo	157
8	TheScrasse	154
9	Dominater069	153
9	nor	153

View all →

→ Find user

→ Recent actions

Detailed →

Atcoder 279G-At most 2 colors: Generating functions.

Revision en1, by CristianoPenaldo, 2022-11-28 16:23:40

Atcoder Beginner Contest 279 is a very good chance to learn generating functions. The English version tutorial of 279Ex has already been post on the MathStackExchange by a kind person.

combinatorics, generating function

History

Revisions

Rev.	By	When	Δ	Comment
en48	CristianoPenaldo	2022-11-29 06:22:07	10	Tiny change: 'he sum of segmen' -> 'he sum of length of segmen'
en47	CristianoPenaldo	2022-11-28 20:37:43	40	Tiny change: 'unction). The Eng' -> 'unction). GFs could solve two of them (G and Ex). The Eng'
en46	CristianoPenaldo	2022-11-28 20:26:58	2	Tiny change: '36865779\nCore cod' -> '36865779\n\nCore cod'
en45	CristianoPenaldo	2022-11-28 20:23:46	2	Tiny change: 'e(n-1); //inverse!\n ' -> 'e(n-1); //Inverse!\n '
en44	CristianoPenaldo	2022-11-28 20:23:20	137
en43	CristianoPenaldo	2022-11-28 20:16:33	43
en42	CristianoPenaldo	2022-11-28 19:46:39	6	Tiny change: 'orem).\n\nAnd the most im' -> 'orem).\n\nThe most im'
en41	CristianoPenaldo	2022-11-28 19:43:34	5	Tiny change: '-2}]\frac{1}{(C-2)x^K' -> '-2}]\frac{C(C-1)}{(C-2)x^K'
en40	CristianoPenaldo	2022-11-28 19:29:15	250	(published)
en39	CristianoPenaldo	2022-11-28 19:25:12	927
en38	CristianoPenaldo	2022-11-28 19:16:47	14
en37	CristianoPenaldo	2022-11-28 19:15:16	14
en36	CristianoPenaldo	2022-11-28 19:14:35	199
en35	CristianoPenaldo	2022-11-28 19:10:22	82
en34	CristianoPenaldo	2022-11-28 19:08:59	84
en33	CristianoPenaldo	2022-11-28 19:08:14	9	Tiny change: 'ag{5}$\n\n$\sum\' -> 'ag{5}$\n\nAnd, \n\n$\sum\'
en32	CristianoPenaldo	2022-11-28 19:06:51	42
en31	CristianoPenaldo	2022-11-28 19:05:30	128
en30	CristianoPenaldo	2022-11-28 19:03:06	296
en29	CristianoPenaldo	2022-11-28 18:59:14	647
en28	CristianoPenaldo	2022-11-28 18:52:33	514
en27	CristianoPenaldo	2022-11-28 18:45:35	139
en26	CristianoPenaldo	2022-11-28 18:42:58	200
en25	CristianoPenaldo	2022-11-28 18:40:36	77
en24	CristianoPenaldo	2022-11-28 18:38:58	286
en23	CristianoPenaldo	2022-11-28 18:36:38	741
en22	CristianoPenaldo	2022-11-28 18:26:28	261
en21	CristianoPenaldo	2022-11-28 18:21:14	10	Tiny change: '1}{1-2x}$ as $\sum\lim' -> '1}{1-2x}$ to $\sum\lim'
en20	CristianoPenaldo	2022-11-28 18:19:57	358
en19	CristianoPenaldo	2022-11-28 18:16:43	680
en18	CristianoPenaldo	2022-11-28 18:04:09	13	Tiny change: 'I believe most newbies can under' -> 'I believe you can under'
en17	CristianoPenaldo	2022-11-28 18:03:41	5	Tiny change: 'I believe than most newb' -> 'I believe most newb'
en16	CristianoPenaldo	2022-11-28 18:03:16	221
en15	CristianoPenaldo	2022-11-28 18:01:02	53
en14	CristianoPenaldo	2022-11-28 17:36:43	313
en13	CristianoPenaldo	2022-11-28 17:28:37	150
en12	CristianoPenaldo	2022-11-28 17:20:53	383
en11	CristianoPenaldo	2022-11-28 17:17:25	608
en10	CristianoPenaldo	2022-11-28 17:11:29	7
en9	CristianoPenaldo	2022-11-28 17:11:05	105
en8	CristianoPenaldo	2022-11-28 17:09:36	6
en7	CristianoPenaldo	2022-11-28 17:09:05	167
en6	CristianoPenaldo	2022-11-28 17:06:21	274
en5	CristianoPenaldo	2022-11-28 17:05:04	524
en4	CristianoPenaldo	2022-11-28 16:33:51	284
en3	CristianoPenaldo	2022-11-28 16:31:38	487
en2	CristianoPenaldo	2022-11-28 16:26:30	221
en1	CristianoPenaldo	2022-11-28 16:23:40	360	Initial revision (saved to drafts)