Problem A
Clock Pictures — Problem Statistics

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Submissions	5100
Accepted submissions	1588
Submission ratio	31.14%
Authors	1143
Accepted authors	914
Author ratio	79.97%

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.72 s	Bash	2024-04-09 14:47:19

#	User	Runtime	Language	Date
1	Johan Westerlund	0.00 s	C	2014-10-12 11:33:52
2	Eyleifur Bjarkason	0.06 s	C	2019-04-01 17:54:24
3	Andreas Björklund	0.08 s	C	2018-12-02 17:53:32
4	Bergur Snorrason	0.08 s	C	2019-03-24 20:08:33
5	Ryan Maschino	0.08 s	C	2023-11-02 01:36:43
6	Viktor Brange	0.09 s	C	2014-12-03 11:27:43
7	Erik Månsson	0.09 s	C	2014-12-12 21:56:20
8	Carl Martin Rosenberg	0.09 s	C	2015-11-08 13:43:51
9	Achraf Mamdouh	0.09 s	C	2016-02-29 17:26:38
10	Eric Dand	0.09 s	C	2017-04-05 03:01:57

#	User	Runtime	Language	Date
1	Bryan Shiffman	0.26 s	C#	2014-10-06 14:32:18
2	Piotr Karpala	0.27 s	C#	2015-09-18 00:38:13
3	Viktor Máni	0.33 s	C#	2020-05-17 23:48:52
4	Viktor Máni Mönster	0.33 s	C#	2020-05-18 15:10:07
5	Klara Folke	0.41 s	C#	2021-02-25 17:29:38

#	User	Runtime	Language	Date
1	Johan Westerlund	0.00 s	C++	2015-09-23 21:40:32
2	Magnus Hokland Hegdahl	0.01 s	C++	2022-11-17 10:59:33
3	Lars Hummelgren	0.02 s	C++	2018-01-27 10:07:26
4	Kenneth Langedal	0.02 s	C++	2019-09-03 22:06:41
5	Frank Endriss	0.02 s	C++	2020-10-13 16:56:05
6	Tomas Hardin	0.03 s	C++	2014-10-06 10:21:25
7	Hidden user	0.04 s	C++	2015-04-26 18:24:18
8	Kieran Horgan	0.04 s	C++	2018-05-14 15:56:10
9	Konstantin Vladimirov	0.04 s	C++	2018-10-17 16:21:40
10	Paweł Burzyński	0.04 s	C++	2018-10-17 17:32:20

#	User	Runtime	Language	Date
1	Norbert Voelker	0.12 s	Go	2023-03-20 20:18:40
2	Erlend Fonnes	0.20 s	Go	2021-05-18 17:45:41

#	User	Runtime	Language	Date
1	Øyvind Almli	0.75 s	Haskell	2022-05-20 13:50:28
2	Trinh Hoang Anh	0.95 s	Haskell	2017-09-25 17:37:39

#	User	Runtime	Language	Date
1	Hà Minh Ngọc	0.22 s	Java	2015-11-06 15:35:31
2	William Brigham	0.26 s	Java	2017-10-27 20:25:14
3	Sam Reinehr	0.26 s	Java	2018-10-17 02:08:59
4	Crystal Sharpe	0.29 s	Java	2022-02-24 01:38:09
5	Jan Štola	0.31 s	Java	2015-04-02 08:40:42
6	Marco Vincenzo Karaan	0.32 s	Java	2016-02-13 07:33:27
7	Charlotte Zhuang	0.33 s	Java	2020-11-09 02:39:18
8	Nguyen Henry	0.36 s	Java	2018-01-07 10:45:59
9	Dante Bencivenga	0.36 s	Java	2018-03-01 04:01:36
10	Patrik Hörnqvist	0.39 s	Java	2014-10-07 00:02:25

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.22 s	JavaScript (SpiderMonkey)	2019-03-26 19:26:28
2	Christian Cederquist	0.70 s	JavaScript (SpiderMonkey)	2023-02-17 15:28:15

#	User	Runtime	Language	Date
1	Phường Lên	0.94 s	Kotlin	2020-05-20 23:18:56

#	User	Runtime	Language	Date
1	Boyan Duan	0.08 s	Python 2	2018-10-18 00:32:04
2	Hans Rusten	0.13 s	Python 2	2015-11-19 13:15:53
3	Torstein Strømme	0.14 s	Python 2	2019-07-01 11:50:51
4	Andreas Björklund	0.15 s	Python 2	2022-01-25 17:02:57
5	Morten Hein Tiljeset	0.16 s	Python 2	2015-10-05 17:05:10
6	Carl Martin Rosenberg	0.16 s	Python 2	2015-11-08 13:54:15
7	Haggai Liu	0.16 s	Python 2	2018-01-11 05:11:02
8	Pinzhen Chen	0.16 s	Python 2	2018-10-18 00:38:10
9	Hidden user	0.17 s	Python 2	2014-10-06 14:56:34
10	Marcus Johansson	0.17 s	Python 2	2016-09-27 23:01:52

#	User	Runtime	Language	Date
1	Simon Hallefält	0.17 s	Python 3	2023-01-25 19:30:52
2	Kristian Elde Johansen	0.17 s	Python 3	2025-04-28 17:31:03
3	Ryoki Kunii	0.18 s	Python 3	2020-10-31 20:09:05
4	Hidden user	0.18 s	Python 3	2022-08-14 19:33:31
5	Franciszek Szewczyk	0.18 s	Python 3	2022-10-15 17:27:15
6	Wojciech T	0.18 s	Python 3	2022-10-20 16:20:56
7	Hidden user	0.18 s	Python 3	2022-11-17 10:07:09
8	Hidden user	0.18 s	Python 3	2025-04-06 16:25:21
9	Brian Jensvoll-Jørgensen	0.18 s	Python 3	2025-04-30 14:26:40
10	Julie Sandanger	0.18 s	Python 3	2025-05-01 11:00:11

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Ruby	2023-08-15 15:10:22
2	Chenzhang Hu	0.67 s	Ruby	2024-04-15 13:20:58

#	User	Runtime	Language	Date
1	Ryan O'Hara	0.02 s	Rust	2022-10-25 05:26:56
2	Jan Inge Sande	0.02 s	Rust	2025-05-14 08:52:19
3	Ole Vik Lysne	0.03 s	Rust	2024-04-29 20:28:04
4	Vincent Lagerros	0.03 s	Rust	2024-05-10 03:40:37
5	Lukas Viering	0.03 s	Rust	2025-02-13 01:57:04
6	Sebastian Refsnes	0.03 s	Rust	2025-04-28 17:36:12
7	Hidden user	0.03 s	Rust	2025-05-05 17:05:02
8	Emil Hultcrantz	0.04 s	Rust	2022-05-25 18:10:20
9	Akemi Izuko	0.05 s	Rust	2022-10-24 06:56:38
10	gard heine kalland	0.05 s	Rust	2024-05-16 22:32:57

#	User	Length	Language	Date
1	Chenzhang Hu	5	Bash	2024-04-09 14:47:19

#	User	Length	Language	Date
1	Johan Westerlund	54	C	2015-09-24 10:26:45
2	Erik Månsson	1047	C	2014-12-12 22:03:46
3	Eric Dand	1143	C	2017-04-05 03:01:57
4	Achraf Mamdouh	1156	C	2016-02-29 17:26:38
5	Ivan Petrov	1193	C	2019-05-31 12:58:27
6	Hidden user	1381	C	2023-11-15 19:59:45
7	Bryan Heryanto	1396	C	2019-09-29 11:30:07
8	Andreas Björklund	1494	C	2018-12-02 17:53:32
9	Ryan O'Hara	1538	C	2017-11-03 03:21:00
10	Carl Martin Rosenberg	1674	C	2015-11-08 13:43:51

#	User	Length	Language	Date
1	Piotr Karpala	2966	C#	2015-09-17 23:42:34
2	Viktor Máni Mönster	3212	C#	2020-05-18 15:10:07
3	Viktor Máni	3214	C#	2020-05-17 23:48:52
4	Klara Folke	3569	C#	2021-02-25 17:29:38
5	Bryan Shiffman	8631	C#	2014-10-06 14:32:18

#	User	Length	Language	Date
1	Johan Westerlund	146	C++	2015-09-23 21:40:32
2	Paweł Burzyński	619	C++	2018-10-17 17:32:20
3	Willson Wijaya	737	C++	2019-09-02 11:56:39
4	Elias Lolck	787	C++	2023-01-03 13:08:53
5	Mikołaj Stępiński	825	C++	2020-12-11 15:31:19
6	Geoffry Song	831	C++	2015-03-14 18:46:53
7	Xi Yi	850	C++	2015-03-14 20:09:41
8	陈宏伟	861	C++	2024-08-03 04:46:39
9	William Gan	878	C++	2017-08-13 07:59:18
10	Jannik Olbrich	889	C++	2019-07-07 14:34:40

#	User	Length	Language	Date
1	Erlend Fonnes	1666	Go	2021-05-18 17:46:58
2	Norbert Voelker	1684	Go	2023-03-20 20:22:07

#	User	Length	Language	Date
1	Trinh Hoang Anh	927	Haskell	2017-09-25 17:37:39
2	Øyvind Almli	1604	Haskell	2022-05-20 13:38:20

#	User	Length	Language	Date
1	Patrik Hörnqvist	1007	Java	2014-10-06 17:38:24
2	Hidden user	1171	Java	2014-10-04 11:35:22
3	Sam Reinehr	1369	Java	2018-10-17 02:08:59
4	Amon Al-khatib	1419	Java	2017-03-02 21:22:09
5	Marco Vincenzo Karaan	1422	Java	2016-02-13 07:33:27
6	Benjamin Scott Pruett	1457	Java	2015-02-24 04:05:55
7	Måns Magnusson	1481	Java	2016-03-09 13:48:47
8	Doug Goodman	1529	Java	2018-07-13 19:42:00
9	Eric Schneider	1631	Java	2015-03-14 20:50:40
10	Crystal Sharpe	1686	Java	2022-02-24 01:38:09

#	User	Length	Language	Date
1	Christian Cederquist	585	JavaScript (SpiderMonkey)	2023-02-17 15:28:15
2	Bjørn Chr. Soltvedt	2894	JavaScript (SpiderMonkey)	2019-03-26 19:26:28

#	User	Length	Language	Date
1	Phường Lên	1604	Kotlin	2020-05-20 23:18:56

#	User	Length	Language	Date
1	Andreas Björklund	570	Python 2	2022-01-25 17:02:57
2	Hidden user	671	Python 2	2014-10-06 15:04:52
3	Boyan Duan	709	Python 2	2018-10-18 00:32:04
4	Martin Tran	760	Python 2	2018-02-25 08:42:48
5	Marcus Johansson	791	Python 2	2016-09-27 23:01:52
6	Torstein Strømme	871	Python 2	2019-07-01 11:50:51
7	Maj Stenmark	887	Python 2	2018-08-01 00:17:47
8	Haggai Liu	898	Python 2	2018-01-11 05:11:02
9	Morten Hein Tiljeset	965	Python 2	2015-10-05 17:05:10
10	Hans Rusten	986	Python 2	2015-11-19 13:15:53

#	User	Length	Language	Date
1	Øyvind Almli	209	Python 3	2021-05-18 16:23:34
2	Ryoki Kunii	383	Python 3	2020-10-31 20:09:05
3	Frederick Ivan Tan	425	Python 3	2023-01-20 10:37:00
4	Nicholas Russell Saerang	481	Python 3	2024-06-06 20:31:52
5	Lennart Meyling	486	Python 3	2024-08-11 12:38:55
6	Simon Hallefält	504	Python 3	2023-01-25 19:30:52
7	Jesper Bech Christensen	512	Python 3	2022-10-28 09:53:10
8	Julius Thunström	600	Python 3	2022-10-01 02:53:23
9	Hidden user	620	Python 3	2022-08-14 19:33:31
10	Colin Siles	680	Python 3	2022-05-22 02:56:18

#	User	Length	Language	Date
1	Thomas Feld	47	Ruby	2023-08-15 16:09:20
2	Chenzhang Hu	345	Ruby	2024-04-15 13:20:58

#	User	Length	Language	Date
1	Lukas Viering	1785	Rust	2025-02-13 01:57:04
2	Hidden user	1805	Rust	2025-05-05 17:05:02
3	gard heine kalland	1962	Rust	2024-05-16 22:32:57
4	Ole Vik Lysne	2114	Rust	2024-04-29 20:28:04
5	Sebastian Refsnes	2272	Rust	2025-04-28 17:36:12
6	Ryan O'Hara	2404	Rust	2022-10-23 06:55:53
7	Emil Hultcrantz	2446	Rust	2022-05-25 18:10:20
8	Jan Inge Sande	2533	Rust	2025-05-14 08:52:19
9	Yoeri Otten	3039	Rust	2022-04-25 01:14:04
10	Akemi Izuko	6493	Rust	2022-10-24 06:56:38

Solution running time distribution