Problem A
Prime Matrix — Problem Statistics

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Submissions	1236
Accepted submissions	357
Submission ratio	28.88%
Authors	325
Full solves [?]	270
Full solve Ratio	83.08%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.00 s	C	2020-01-27 16:24:03

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	Common Lisp	2019-07-23 02:15:38

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Haskell	2023-08-05 22:34:01
2	Brent Yorgey	0.01 s	Haskell	2018-10-25 05:07:30

#	User	Runtime	Language	Date
1	Daniel Moyer	0.05 s	Java	2017-10-14 01:37:04
2	Godmar Back	0.06 s	Java	2017-10-14 00:46:57
3	Aldo Chow	0.06 s	Java	2017-10-15 06:34:45
4	Atharva Nagarkar	0.06 s	Java	2018-08-13 12:16:42
5	Bjørn Dons	0.06 s	Java	2018-12-05 20:29:13
6	Logan Pipes	0.06 s	Java	2022-08-21 03:24:38
7	Ronald Rojas	0.07 s	Java	2017-10-14 03:47:25
8	John Ladera	0.07 s	Java	2018-03-13 06:29:18
9	Crystal Sharpe	0.07 s	Java	2020-08-07 08:23:38
10	Kristian Rosland	0.07 s	Java	2021-02-18 20:46:18

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.03 s	JavaScript (SpiderMonkey)	2019-02-20 21:04:32

#	User	Runtime	Language	Date
1	Timothy Gaede	0.99 s	Julia	2024-09-17 07:16:47

#	User	Runtime	Language	Date
1	Adam Rankin	0.22 s	Kotlin	2023-09-27 22:20:37
2	Jonathan Soo	0.25 s	Kotlin	2019-08-20 12:07:37

#	User	Runtime	Language	Date
1	Asger Hautop Drewsen	0.03 s	Python 2	2018-10-31 12:48:39
2	Lars Åström	0.03 s	Python 2	2018-11-02 10:43:43
3	Jesper Öqvist	0.03 s	Python 2	2018-11-04 17:38:14
4	Benjamin Floyd	0.03 s	Python 2	2019-01-29 00:46:38
5	Maj Stenmark	0.03 s	Python 2	2019-05-14 22:54:53
6	Andreas Björklund	0.03 s	Python 2	2019-10-08 16:33:55
7	Alex Zhao	0.04 s	Python 2	2017-10-14 01:03:28
8	Bertrand Evertz	0.04 s	Python 2	2019-11-01 12:21:09

#	User	Runtime	Language	Date
1	Kasper Borys	0.02 s	Python 3	2017-10-13 23:57:55
2	Jakub Jagiello	0.02 s	Python 3	2018-11-24 00:22:05
3	Vincent Tandya	0.02 s	Python 3	2019-01-26 10:06:42
4	Isaac Lee	0.02 s	Python 3	2019-06-06 18:12:53
5	Johan Wind	0.03 s	Python 3	2018-10-13 17:47:45
6	Hidden user	0.03 s	Python 3	2019-11-16 01:48:40
7	Daniel Bogorad	0.04 s	Python 3	2025-09-26 00:30:40
8	Sean Kelly	0.04 s	Python 3	2025-10-29 15:42:26
9	Peter Stauder	0.05 s	Python 3	2023-03-04 17:11:43
10	Timothy White	0.05 s	Python 3	2023-03-09 02:10:58

#	User	Runtime	Language	Date
1	Hidden user	0.05 s	Ruby	2019-11-18 14:45:29

#	User	Runtime	Language	Date
1	Pahlevi Fikri Auliya	0.00 s	Rust	2020-11-13 00:52:05

#	User	Length	Language	Date
1	Ivan Petrov	2449	C	2020-01-27 16:24:03

#	User	Length	Language	Date
1	Jiarui Zhang	677	C++	2017-10-14 00:16:03
2	Hidden user	682	C++	2024-03-01 20:02:38
3	David Brink	699	C++	2018-08-19 18:54:15
4	Cameron Custer	703	C++	2022-07-25 20:20:16
5	Donald Dong	726	C++	2019-02-16 07:28:25
6	Ritchie Goldwin	736	C++	2019-07-16 07:27:05
7	Joel Au	757	C++	2020-05-22 11:57:14
8	Shimul Sutradhar	768	C++	2023-01-20 15:35:42
9	Hyunjun Lee	774	C++	2022-11-22 16:35:35
10	Markus Mathiasen	830	C++	2021-12-08 10:34:15

#	User	Length	Language	Date
1	Hidden user	992	Common Lisp	2019-07-23 02:37:02

#	User	Length	Language	Date
1	Brent Yorgey	2321	Haskell	2018-10-25 05:07:30
2	Hidden user	5833	Haskell	2023-08-05 22:34:01

#	User	Length	Language	Date
1	Alex Coleman	767	Java	2018-10-17 05:56:57
2	Josh Wozniak	814	Java	2017-10-14 00:34:46
3	Doug Goodman	925	Java	2019-08-15 22:41:56
4	Duncan Page	1017	Java	2019-01-29 00:24:59
5	Branden Mazour	1210	Java	2018-10-19 09:09:25
6	Andrew Polizzotto	1230	Java	2020-02-29 06:09:40
7	Nathan Nickelson	1297	Java	2019-07-14 02:21:26
8	Merten Bohn	1307	Java	2022-11-08 21:06:34
9	Ekjot Multani	1355	Java	2020-12-01 03:16:47
10	Rohit Motwani	1373	Java	2017-10-14 00:05:23

#	User	Length	Language	Date
1	Bjørn Chr. Soltvedt	1387	JavaScript (SpiderMonkey)	2019-02-20 21:04:32

#	User	Length	Language	Date
1	Timothy Gaede	6067	Julia	2024-09-17 07:16:47

#	User	Length	Language	Date
1	Adam Rankin	1341	Kotlin	2023-09-27 22:20:37
2	Jonathan Soo	1582	Kotlin	2019-08-20 12:07:37

#	User	Length	Language	Date
1	Asger Hautop Drewsen	473	Python 2	2018-10-31 12:48:39
2	Andreas Björklund	568	Python 2	2019-10-08 16:33:55
3	Alex Zhao	626	Python 2	2017-10-14 01:03:28
4	Benjamin Floyd	726	Python 2	2019-01-29 00:46:38
5	Lars Åström	796	Python 2	2018-11-02 10:43:43
6	Bertrand Evertz	831	Python 2	2019-11-01 12:21:09
7	Jesper Öqvist	844	Python 2	2018-11-04 17:38:14
8	Maj Stenmark	857	Python 2	2019-05-14 22:54:53

#	User	Length	Language	Date
1	Benjamin Z White	228	Python 3	2023-06-10 01:24:08
2	Peter Stauder	245	Python 3	2023-03-04 17:20:19
3	Lawry Sorenson	283	Python 3	2023-08-25 19:03:12
4	Ryoki Kunii	404	Python 3	2020-09-09 01:22:23
5	Timothy White	443	Python 3	2023-03-09 02:10:58
6	Hidden user	445	Python 3	2021-05-07 05:52:58
7	Daniel Bogorad	493	Python 3	2025-09-26 00:30:40
8	Guan Yang Ze	568	Python 3	2021-03-10 10:16:21
9	Nicholas Russell Saerang	594	Python 3	2023-07-12 13:13:28
10	Johan Wind	638	Python 3	2018-10-13 17:47:45

#	User	Length	Language	Date
1	Hidden user	257	Ruby	2019-11-18 14:53:07

#	User	Length	Language	Date
1	Pahlevi Fikri Auliya	3742	Rust	2020-11-13 00:52:05

Solution running time distribution