Problem A
Odd Binomial Coefficients — Problem Statistics

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Submissions	2192
Accepted submissions	752
Submission ratio	34.31%
Authors	569
Full solves [?]	486
Full solve Ratio	85.41%

#	User	Runtime	Language	Date
1	Bas te Kolste	0.02 s	C#	2015-06-19 19:28:51
2	Brian Scott	0.02 s	C#	2018-09-18 09:29:46
3	Hidden user	0.20 s	C#	2015-04-26 13:38:38

#	User	Runtime	Language	Date
1	Norbert Voelker	0.08 s	Go	2022-01-15 20:09:13

#	User	Runtime	Language	Date
1	Lukas Polacek	0.00 s	Haskell	2015-07-01 22:19:59
2	Matthew Johnson	0.00 s	Haskell	2017-05-12 05:38:58
3	Brent Yorgey	0.00 s	Haskell	2018-04-11 07:39:37
4	Fulano de Tal	0.01 s	Haskell	2022-02-02 16:32:11

#	User	Runtime	Language	Date
1	Taras Romanyuk	0.04 s	Java	2024-09-18 20:55:33
2	Rene Argento	0.04 s	Java	2025-12-07 02:48:00
3	Jens Ståhl	0.05 s	Java	2015-04-26 13:39:44
4	Markus Olsson	0.05 s	Java	2015-10-05 15:07:26
5	Magnar Myrtveit	0.05 s	Java	2015-10-08 00:16:05
6	Hà Minh Ngọc	0.05 s	Java	2015-11-11 07:35:29
7	Trần Công Duy	0.05 s	Java	2015-11-11 16:44:11
8	Petr Ryšavý	0.05 s	Java	2015-11-22 01:12:43
9	Nick Wu	0.05 s	Java	2016-02-03 08:28:54
10	David Brink	0.05 s	Java	2016-08-28 08:34:45

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2017-01-26 11:10:23
2	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-04-20 18:49:22

#	User	Runtime	Language	Date
1	Jacob Huebner	0.13 s	Kotlin	2021-10-17 00:47:30
2	Hidden user	0.17 s	Kotlin	2020-05-06 07:10:59
3	Adam Rankin	0.17 s	Kotlin	2023-09-09 02:16:05

#	User	Runtime	Language	Date
1	Tore Norderud	0.02 s	Python 2	2015-09-17 20:38:39
2	Lars Tveito	0.02 s	Python 2	2015-10-01 18:13:48
3	Sigurd Kittilsen	0.02 s	Python 2	2015-10-05 10:55:34
4	Johan Wind	0.03 s	Python 2	2015-09-16 17:58:32
5	Viktor Brange	0.03 s	Python 2	2015-10-05 03:15:32
6	Andreas Björklund	0.03 s	Python 2	2018-12-13 12:05:30
7	Hermon Mulat	0.03 s	Python 2	2019-02-06 04:34:00
8	Herbert Ilhan Tanujaya	0.03 s	Python 2	2019-03-24 14:00:53
9	Mathieu Rundstrom	0.03 s	Python 2	2019-03-24 20:08:28
10	Agis Daniels	0.03 s	Python 2	2019-12-01 01:50:52

#	User	Runtime	Language	Date
1	Alex Loiko	0.02 s	Python 3	2015-04-26 14:43:01
2	Hidden user	0.02 s	Python 3	2015-10-03 13:16:16
3	Jarno Alanko	0.02 s	Python 3	2015-10-04 14:54:17
4	Alexander Simko	0.02 s	Python 3	2015-10-09 18:23:06
5	Robert Welin-Berger	0.02 s	Python 3	2015-10-13 20:55:16
6	Michael Hoffmann	0.02 s	Python 3	2016-11-26 21:30:14
7	Денис Соболев	0.02 s	Python 3	2017-08-19 17:58:09
8	Arthur Tseng	0.02 s	Python 3	2018-06-14 05:35:13
9	Ivan Miloslavov	0.02 s	Python 3	2018-11-05 19:04:45
10	Vương Thiện Trung	0.02 s	Python 3	2018-11-11 00:21:02

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Ruby	2023-02-06 15:26:42
2	Clement Oh	0.50 s	Ruby	2024-03-16 13:04:07

#	User	Runtime	Language	Date
1	Leslie Yip	0.00 s	Rust	2022-12-01 13:50:12

#	User	Length	Language	Date
1	Hidden user	266	C	2024-03-06 09:59:12
2	Jón Steinn Elíasson	421	C	2017-06-09 21:23:29
3	Hidden user	440	C	2017-06-28 15:23:45
4	Bob Stanley	472	C	2018-11-07 23:50:00
5	Ng Wei Jie	472	C	2020-02-18 13:44:15
6	Hidden user	472	C	2023-11-14 13:14:07
7	Hidden user	472	C	2024-02-18 13:04:48
8	Dung Nguyen	472	C	2024-12-03 05:18:14
9	Huynh Gia Huy	472	C	2024-12-10 01:43:41
10	Mark Zhu	484	C	2019-03-26 02:59:20

#	User	Length	Language	Date
1	Brian Scott	538	C#	2018-09-18 09:29:46
2	Bas te Kolste	2523	C#	2015-06-19 19:28:51
3	Hidden user	3928	C#	2015-04-26 13:38:38

#	User	Length	Language	Date
1	Muhammad Irham Rasyidi	226	C++	2017-06-28 17:27:51
2	Syx Pek	230	C++	2016-11-29 17:13:53
3	Way Tan	251	C++	2019-03-13 16:29:18
4	Joonatan Matias Lennart Saarhelo	269	C++	2015-10-03 15:28:32
5	Hidden user	272	C++	2024-11-08 19:59:10
6	Yeung Man Tsung	273	C++	2022-12-06 08:43:29
7	Christian Yongwhan Lim	288	C++	2023-06-15 14:34:52
8	Marc Phua	296	C++	2020-02-15 11:26:12
9	Sidhant Bansal	301	C++	2018-05-10 10:50:58
10	Clement Oh	301	C++	2023-09-21 12:38:07

#	User	Length	Language	Date
1	Norbert Voelker	1394	Go	2022-01-15 20:09:13

#	User	Length	Language	Date
1	Matthew Johnson	192	Haskell	2017-05-12 05:38:58
2	Lukas Polacek	267	Haskell	2015-07-01 22:19:59
3	Brent Yorgey	340	Haskell	2018-04-11 07:39:37
4	Fulano de Tal	949	Haskell	2022-02-02 16:32:11

#	User	Length	Language	Date
1	Yan Yu	444	Java	2018-11-09 05:49:54
2	Tuan Nguyen Truong Anh	463	Java	2024-11-21 07:08:07
3	Long Nguyen Manh Thanh	464	Java	2024-11-19 11:10:04
4	Vo Van Tuan Kiet	476	Java	2024-11-19 11:06:46
5	Nguyen Duy	476	Java	2024-12-05 12:10:57
6	Lily Zhang	482	Java	2019-03-23 15:38:32
7	John Kim	508	Java	2019-03-19 02:34:37
8	Hidden user	558	Java	2023-11-12 22:50:13
9	Minh Truong Quang	558	Java	2023-11-14 13:25:46
10	Hidden user	558	Java	2023-11-14 22:08:20

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	97	JavaScript (SpiderMonkey)	2023-04-20 18:56:34
2	Bjørn Chr. Soltvedt	18452	JavaScript (SpiderMonkey)	2017-01-26 11:10:23

#	User	Length	Language	Date
1	Adam Rankin	511	Kotlin	2023-09-09 02:16:05
2	Hidden user	548	Kotlin	2020-05-06 07:10:59
3	Jacob Huebner	871	Kotlin	2021-10-17 00:47:30

#	User	Length	Language	Date
1	Johan Lyts	133	Python 2	2020-09-23 21:51:12
2	Andreas Björklund	174	Python 2	2018-12-13 12:05:30
3	Lars Tveito	177	Python 2	2015-10-01 18:13:48
4	Agis Daniels	211	Python 2	2019-12-01 01:56:30
5	Sigurd Kittilsen	237	Python 2	2015-10-05 10:55:34
6	Bertrand Evertz	237	Python 2	2020-12-23 20:57:45
7	Herbert Ilhan Tanujaya	245	Python 2	2019-03-24 14:00:53
8	Tore Norderud	283	Python 2	2015-09-17 20:38:39
9	Johan Wind	287	Python 2	2015-09-16 17:58:32
10	Lars Åström	313	Python 2	2019-10-31 18:23:46

#	User	Length	Language	Date
1	Shashank Bhatt	63	Python 3	2024-04-03 20:49:57
2	Evan Rose	67	Python 3	2023-02-09 05:41:22
3	Lawry Sorenson	73	Python 3	2025-06-12 19:14:12
4	Kevin Gomez	81	Python 3	2024-11-13 04:50:53
5	Farzam Abrishami	84	Python 3	2024-01-27 22:20:56
6	Guillermo Hernández	100	Python 3	2023-12-31 16:28:05
7	Peter Stauder	103	Python 3	2023-04-10 10:24:16
8	Kelly Dance	105	Python 3	2023-04-06 08:37:24
9	Ethan Lu	124	Python 3	2023-07-10 11:10:00
10	Artemis Ngoh	125	Python 3	2023-07-07 22:04:01

#	User	Length	Language	Date
1	Thomas Feld	55	Ruby	2023-02-06 15:27:35
2	Clement Oh	146	Ruby	2024-03-16 13:04:07

#	User	Length	Language	Date
1	Leslie Yip	561	Rust	2022-12-01 13:50:12

Solution running time distribution