Problem I
Book Club — Problem Statistics

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Submissions	3256
Accepted submissions	1008
Submission ratio	30.96%
Authors	791
Accepted authors	625
Author ratio	79.01%

#	User	Runtime	Language	Date
1	Jesper Öqvist	0.01 s	C	2018-09-17 16:32:06
2	Pedro Vinícius Ferreira Baptista	0.04 s	C	2018-06-25 00:08:06
3	Ivan Petrov	0.10 s	C	2019-05-29 09:33:13

#	User	Runtime	Language	Date
1	Neal Zane	0.00 s	C++	2015-12-20 21:50:36
2	Diogen Babuc	0.00 s	C++	2022-08-26 15:41:21
3	Luca Seritan	0.00 s	C++	2022-10-29 09:14:17
4	[UPB] Giocanul	0.00 s	C++	2022-10-29 09:31:41
5	Andrei Cotor	0.00 s	C++	2022-10-29 10:31:51
6	Catalin Vanciu	0.00 s	C++	2022-10-29 10:39:16
7	Călugăr Tudor-Mihai	0.00 s	C++	2022-10-29 13:53:08
8	Denil Bouafia	0.00 s	C++	2024-10-04 16:16:42
9	David Choi	0.01 s	C++	2015-10-25 18:35:52
10	Howard Cheng	0.01 s	C++	2015-10-25 22:33:53

#	User	Runtime	Language	Date
1	Zach Tschetter	0.12 s	Haskell	2021-12-06 17:19:01

#	User	Runtime	Language	Date
1	José Vander Meulen	0.09 s	Java	2018-06-05 23:36:38
2	Mehdi Maick	0.10 s	Java	2017-10-28 04:32:39
3	John Kevin Tjahjadi	0.11 s	Java	2016-03-15 12:57:59
4	Samuel Klingström	0.14 s	Java	2018-12-04 14:00:36
5	Bjørn Dons	0.14 s	Java	2023-04-18 21:23:36
6	Michel Langeveld	0.15 s	Java	2016-12-04 23:13:40
7	Jakob Kallestad	0.15 s	Java	2019-04-03 19:55:21
8	Duncan Page	0.15 s	Java	2020-01-07 01:09:42
9	Louie Tan Yi Jie	0.16 s	Java	2018-10-17 07:03:58
10	Benjamin Reidys	0.16 s	Java	2018-11-21 20:34:44

#	User	Runtime	Language	Date
1	Christian Cederquist	0.20 s	JavaScript (SpiderMonkey)	2023-08-17 17:04:51

#	User	Runtime	Language	Date
1	Jacob Huebner	0.42 s	Kotlin	2023-05-11 13:01:52
2	Johan Wind	0.54 s	Kotlin	2025-06-22 00:00:31
3	Phường Lên	0.55 s	Kotlin	2020-05-28 02:23:02
4	Sam Keyser	0.55 s	Kotlin	2023-05-07 21:42:46
5	Aksel Holbek Sørbye	0.80 s	Kotlin	2025-06-22 00:59:24

#	User	Runtime	Language	Date
1	James Lawson	0.11 s	Python 2	2019-03-03 16:58:25
2	Harry Smidt	0.11 s	Python 2	2019-10-15 22:05:28
3	Anton Lyxell	0.14 s	Python 2	2019-11-18 22:37:06
4	Ram Basnet	0.47 s	Python 2	2019-11-30 00:07:27
5	Jesper Öqvist	0.48 s	Python 2	2018-09-17 15:56:59

#	User	Runtime	Language	Date
1	Harry Smidt	0.08 s	Python 3	2019-10-15 22:05:10
2	Issa Issack	0.09 s	Python 3	2025-07-24 21:33:05
3	Nandan Ramesh	0.10 s	Python 3	2023-12-06 08:03:42
4	Aljaz Marn	0.10 s	Python 3	2025-02-07 14:31:20
5	Pia Tominec	0.10 s	Python 3	2025-02-07 14:42:31
6	Tianqin Chu	0.10 s	Python 3	2025-06-03 21:47:01
7	Hidden user	0.11 s	Python 3	2023-12-07 13:31:51
8	Aaron Boyd	0.11 s	Python 3	2023-12-08 01:07:10
9	Duoduo Zhao	0.11 s	Python 3	2025-07-20 19:41:46
10	Rahul Korde	0.12 s	Python 3	2022-12-11 09:10:34

#	User	Runtime	Language	Date
1	Akemi Izuko	0.01 s	Rust	2022-11-01 02:00:35
2	Bas Dirks	0.01 s	Rust	2024-02-20 08:35:59

#	User	Length	Language	Date
1	Ivan Petrov	1180	C	2019-05-29 09:33:13
2	Jesper Öqvist	1617	C	2018-09-17 16:32:06
3	Pedro Vinícius Ferreira Baptista	1825	C	2018-06-25 00:18:10

#	User	Length	Language	Date
1	Mathias Gernez	449	C++	2023-09-14 02:13:09
2	Elias Lolck	575	C++	2021-05-29 13:47:54
3	Johan Wind	590	C++	2018-11-08 01:12:51
4	Hidden user	606	C++	2024-10-14 19:00:31
5	Hidden user	609	C++	2025-01-15 16:03:44
6	Hidden user	613	C++	2018-05-25 22:12:48
7	Ivan Carvalho	632	C++	2018-05-25 22:13:06
8	Ernest Ng Zi Xuan	636	C++	2024-05-26 07:21:57
9	Govind Venugopalan	636	C++	2017-03-08 20:09:46
10	Si Jun Ke	658	C++	2016-03-16 02:31:32

#	User	Length	Language	Date
1	Zach Tschetter	1813	Haskell	2021-12-06 17:30:20

#	User	Length	Language	Date
1	Jiru Xu	968	Java	2016-10-26 04:49:27
2	Hidden user	1192	Java	2024-05-15 17:51:05
3	Doug Goodman	1281	Java	2021-11-22 21:35:07
4	FermatingCode	1373	Java	2025-04-03 16:50:22
5	John Kevin Tjahjadi	1416	Java	2016-04-13 07:58:15
6	Sithanathan Rahul	1452	Java	2023-11-14 15:26:34
7	Joshua Tan Yin Feng	1461	Java	2020-05-01 17:24:26
8	Noah Goldsmid	1580	Java	2016-10-28 02:27:43
9	Brian Chalfant	1640	Java	2020-11-20 03:23:10
10	Aniruddh Sriram	1665	Java	2021-02-27 03:25:53

#	User	Length	Language	Date
1	Christian Cederquist	8901	JavaScript (SpiderMonkey)	2023-08-17 17:04:51

#	User	Length	Language	Date
1	Phường Lên	1741	Kotlin	2020-05-28 02:23:02
2	Jacob Huebner	2908	Kotlin	2023-05-11 22:48:40
3	Sam Keyser	3069	Kotlin	2023-05-07 21:42:46
4	Johan Wind	19523	Kotlin	2025-06-22 00:00:31
5	Aksel Holbek Sørbye	19657	Kotlin	2025-06-22 00:59:24

#	User	Length	Language	Date
1	Jesper Öqvist	685	Python 2	2018-09-17 15:56:59
2	Anton Lyxell	801	Python 2	2019-11-18 21:54:43
3	Ram Basnet	1400	Python 2	2019-11-30 00:07:27
4	James Lawson	1891	Python 2	2019-03-03 16:58:25
5	Harry Smidt	2054	Python 2	2019-10-15 22:05:28

#	User	Length	Language	Date
1	Lin Bigom-Eriksen	495	Python 3	2021-05-29 16:32:54
2	Nicholas Russell Saerang	668	Python 3	2023-06-29 03:27:23
3	Heliya Shariati	675	Python 3	2022-07-04 08:32:03
4	Zach Tschetter	683	Python 3	2023-09-16 20:50:44
5	Maximilian Saal	692	Python 3	2023-05-01 23:29:54
6	Matthew Cheney	702	Python 3	2020-11-24 23:03:32
7	Andrei	731	Python 3	2022-10-29 11:05:33
8	Mattéo Delabre	737	Python 3	2023-02-23 15:05:44
9	Lauren Xavier	755	Python 3	2023-11-08 09:50:13
10	Hidden user	762	Python 3	2020-08-23 13:19:44

#	User	Length	Language	Date
1	Bas Dirks	1669	Rust	2024-02-20 08:35:59
2	Akemi Izuko	1788	Rust	2022-11-01 02:00:35

Solution running time distribution