Problem U
Studying For Exams — Problem Statistics

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Submissions	805
Accepted submissions	249
Submission ratio	30.93%
Authors	232
Full solves [?]	180
Full solve Ratio	77.59%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.00 s	C	2019-08-06 14:00:29

#	User	Runtime	Language	Date
1	Bryan Shiffman	0.02 s	C#	2016-11-05 16:03:57
2	Bryan Shiffman	0.02 s	C#	2016-12-05 17:33:15
3	Andrzej Krajniak	0.03 s	C#	2016-11-07 21:51:35
4	Andriy Zyevakov	0.06 s	C#	2025-12-24 10:30:21
5	Baranov, Eugene	0.07 s	C#	2016-11-05 17:25:11

#	User	Runtime	Language	Date
1	Michał Grygierzec	0.02 s	Haskell	2016-11-15 23:16:07

#	User	Runtime	Language	Date
1	Anh Nguyen	0.06 s	Java	2017-10-28 22:28:12
2	Sam Reinehr	0.06 s	Java	2018-09-22 02:42:15
3	Charlotte Zhuang	0.06 s	Java	2020-10-28 04:09:59
4	Kadin Tang	0.07 s	Java	2020-10-04 08:00:40
5	Micah Stairs	0.08 s	Java	2016-11-02 13:16:45
6	Emanuel Hartman	0.08 s	Java	2017-10-04 01:48:16
7	Ronald Cruz	0.08 s	Java	2017-10-28 22:28:39
8	Bjørn Dons	0.08 s	Java	2024-03-03 23:55:15
9	Scott McKinley	0.09 s	Java	2016-10-29 22:19:06
10	Cole Peterson	0.09 s	Java	2017-10-04 05:40:37

#	User	Runtime	Language	Date
1	Minh Trang Nguyen	0.04 s	JavaScript (Node.js)	2025-12-24 20:16:27

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.08 s	JavaScript (SpiderMonkey)	2018-06-14 04:56:12

#	User	Runtime	Language	Date
1	Timothy Gaede	0.79 s	Julia	2026-02-25 15:07:44

#	User	Runtime	Language	Date
1	Jacob Huebner	0.14 s	Kotlin	2021-06-06 20:24:53

#	User	Runtime	Language	Date
1	Neil Veira	0.03 s	Python 2	2017-10-21 20:17:45
2	Ariana Herbst	0.05 s	Python 2	2017-10-28 23:00:26
3	Nx	0.07 s	Python 2	2020-10-24 22:02:57
4	Lars Åström	0.11 s	Python 2	2019-10-02 11:54:49
5	Måns Magnusson	0.18 s	Python 2	2018-11-13 18:37:38

#	User	Runtime	Language	Date
1	Hidden user	0.02 s	Python 3	2017-09-12 21:33:20
2	Jonathon Arbaugh	0.02 s	Python 3	2017-10-28 23:09:40
3	Dilawar Mahmood	0.02 s	Python 3	2018-10-12 21:36:05
4	Kristoffer Åhgren	0.02 s	Python 3	2019-06-14 18:16:24
5	Halvor Fladsrud Bø	0.04 s	Python 3	2017-11-15 14:48:29
6	Daniel Bogorad	0.04 s	Python 3	2025-07-11 17:01:55
7	Md. Rakibul Hassan	0.04 s	Python 3	2025-12-20 13:33:12
8	Ron Joshi	0.05 s	Python 3	2020-04-15 22:45:39
9	vance	0.05 s	Python 3	2022-11-21 02:29:33
10	Justin Ma	0.05 s	Python 3	2023-10-20 02:50:00

#	User	Length	Language	Date
1	Ivan Petrov	859	C	2019-08-06 14:00:29

#	User	Length	Language	Date
1	Baranov, Eugene	1539	C#	2016-11-05 17:25:11
2	Bryan Shiffman	4395	C#	2016-11-05 16:03:57
3	Bryan Shiffman	4395	C#	2016-12-05 17:33:15
4	Andriy Zyevakov	8279	C#	2025-12-24 10:30:21
5	Andrzej Krajniak	99475	C#	2016-11-07 21:51:35

#	User	Length	Language	Date
1	Darshan Godhia	635	C++	2017-10-28 20:14:39
2	William Gan	652	C++	2017-08-11 15:09:41
3	Weiying Chen	657	C++	2022-03-12 04:40:45
4	Yilun Wu	672	C++	2017-10-28 23:31:49
5	Cameron Custer	708	C++	2021-02-11 07:42:30
6	Vu Hoang Kien	709	C++	2022-01-23 05:41:51
7	Pu Chen	733	C++	2017-11-01 16:32:08
8	Pontakorn Prasertsuk	757	C++	2022-01-20 05:07:47
9	Reyno Tilikaynen	780	C++	2017-10-21 19:08:34
10	Pablo Echavarría Arboleda	783	C++	2017-11-02 23:50:50

#	User	Length	Language	Date
1	Michał Grygierzec	1714	Haskell	2016-11-15 23:12:25

#	User	Length	Language	Date
1	Alyssa Herbst	1030	Java	2017-10-28 21:16:24
2	Jiru Xu	1046	Java	2017-10-29 00:57:26
3	Jonathan Bramley	1096	Java	2017-10-29 20:33:27
4	Ryan Hunt	1155	Java	2016-10-29 21:09:10
5	Emanuel Hartman	1155	Java	2017-10-04 01:48:16
6	Arup Ratan Guha	1202	Java	2019-02-27 07:09:08
7	Roger Ballard	1255	Java	2017-10-28 20:47:59
8	Sam Reinehr	1279	Java	2018-09-22 02:42:15
9	Weitao Li	1288	Java	2017-11-07 06:35:19
10	Cole Peterson	1327	Java	2017-10-04 05:40:37

#	User	Length	Language	Date
1	Minh Trang Nguyen	1367	JavaScript (Node.js)	2025-12-24 20:16:27

#	User	Length	Language	Date
1	Bjørn Chr. Soltvedt	41945	JavaScript (SpiderMonkey)	2018-06-14 04:31:29

#	User	Length	Language	Date
1	Timothy Gaede	1587	Julia	2026-02-25 14:54:11

#	User	Length	Language	Date
1	Jacob Huebner	1114	Kotlin	2021-06-06 20:24:53

#	User	Length	Language	Date
1	Måns Magnusson	385	Python 2	2018-11-13 18:37:38
2	Ariana Herbst	836	Python 2	2017-10-28 23:00:26
3	Neil Veira	955	Python 2	2017-10-21 20:17:45
4	Lars Åström	1107	Python 2	2019-10-02 11:54:49
5	Nx	1145	Python 2	2020-10-24 22:02:57

#	User	Length	Language	Date
1	Isaac Erdman	419	Python 3	2024-10-28 06:46:01
2	Daniel Bogorad	422	Python 3	2025-07-11 17:01:55
3	Halvor Fladsrud Bø	464	Python 3	2017-11-15 14:48:29
4	Yucheng Niu	544	Python 3	2018-04-16 17:06:14
5	Jasper Lu	562	Python 3	2017-10-28 21:44:21
6	Sergii Penner	563	Python 3	2022-03-12 03:51:29
7	Ron Joshi	564	Python 3	2018-06-11 05:23:31
8	Raymond Yang	566	Python 3	2018-04-14 21:46:20
9	Lee Isaac	615	Python 3	2022-12-13 17:12:48
10	C3Speedrun2025	671	Python 3	2025-06-08 11:23:26

Solution running time distribution