Problem A
Matrix Inverse — Problem Statistics

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Submissions	4990
Accepted submissions	1688
Submission ratio	33.83%
Authors	1659
Full solves [?]	1395
Full solve Ratio	84.09%

#	User	Runtime	Language	Date
1	Arvid Jonasson	0.01 s	APL	2025-10-21 16:08:45

#	User	Runtime	Language	Date
1	Sampath Vuyyuru	0.02 s	C#	2014-10-03 05:52:30
2	masosz	0.02 s	C#	2015-04-07 19:33:30
3	Raja Sanjeev Kumar Nakka	0.02 s	C#	2016-05-06 02:58:28
4	Saša Levstik	0.02 s	C#	2016-11-15 17:37:08
5	Klas af Geijerstam	0.02 s	C#	2017-04-11 16:36:37
6	Саттар Имамов	0.02 s	C#	2017-11-14 20:27:04
7	Ishan Jain	0.02 s	C#	2018-01-06 17:51:18
8	Hidden user	0.02 s	C#	2018-04-20 21:39:36
9	Wissam Al Hindi	0.02 s	C#	2018-05-21 15:36:48
10	Andreas	0.02 s	C#	2018-06-25 18:26:47

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	Common Lisp	2022-08-17 23:36:20
2	Timothy Bilik	0.01 s	Common Lisp	2022-09-24 18:33:18

#	User	Runtime	Language	Date
1	dick move	0.00 s	Crystal	2025-09-29 05:53:21

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.05 s	F#	2023-04-10 10:27:17

#	User	Runtime	Language	Date
1	Khin Nyunt	0.00 s	Go	2023-09-11 18:24:13
2	Zachary Short	0.00 s	Go	2025-12-02 23:37:44
3	Norbert Voelker	0.08 s	Go	2021-08-27 01:34:11

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Haskell	2015-01-16 14:22:39
2	Lars Tveito	0.00 s	Haskell	2015-08-13 18:17:29
3	Johan Meier	0.00 s	Haskell	2016-12-06 10:24:12
4	Esther Chong	0.00 s	Haskell	2018-02-02 13:46:05
5	Steinar Simonnes	0.00 s	Haskell	2025-02-04 14:30:27
6	Brent Yorgey	0.01 s	Haskell	2017-10-02 06:05:21
7	Aurélien Pepin	0.01 s	Haskell	2019-10-03 19:01:30
8	Tim Put	0.01 s	Haskell	2019-10-08 01:58:53
9	Shing Tak Lam	0.01 s	Haskell	2021-03-12 11:30:18
10	Rafał Gwoździński	0.01 s	Haskell	2021-03-13 12:26:10

#	User	Runtime	Language	Date
1	Moisés Amezcua	0.05 s	Java	2013-07-03 00:10:55
2	Ben Smith	0.05 s	Java	2015-09-30 03:29:42
3	Pål Forsberg	0.05 s	Java	2015-10-02 09:37:45
4	Eskil Jarlskog	0.05 s	Java	2015-11-09 22:04:51
5	Petr Ryšavý	0.05 s	Java	2015-11-17 18:59:32
6	Dennis Shi	0.05 s	Java	2015-12-27 03:47:51
7	Andreas Jansson	0.05 s	Java	2016-01-07 23:20:57
8	Michael Sullivan	0.05 s	Java	2016-01-17 08:51:30
9	Hidden user	0.05 s	Java	2016-02-10 15:22:33
10	Eric Yu	0.05 s	Java	2016-03-08 16:20:40

#	User	Runtime	Language	Date
1	Mike Anderson	0.05 s	JavaScript (Node.js)	2019-02-12 02:00:06
2	Khin Nyunt	0.42 s	JavaScript (Node.js)	2021-11-22 16:22:25

#	User	Runtime	Language	Date
1	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2016-01-01 09:57:28
2	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2017-11-09 02:11:39
3	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-06-03 22:45:35
4	Zach Tschetter	0.02 s	JavaScript (SpiderMonkey)	2023-06-15 20:35:09

#	User	Runtime	Language	Date
1	Timothy Gaede	0.47 s	Julia	2025-10-29 11:44:38
2	Hidden user	0.92 s	Julia	2025-03-17 20:56:12

#	User	Runtime	Language	Date
1	Jacob Huebner	0.16 s	Kotlin	2020-04-13 18:19:51
2	Phường Lên	0.18 s	Kotlin	2019-12-13 03:32:34
3	Filip Belik	0.18 s	Kotlin	2019-12-16 02:39:03
4	Thanh Le	0.19 s	Kotlin	2020-09-25 01:06:00
5	Adam Koprowski	0.19 s	Kotlin	2021-12-29 21:27:04
6	Adam Rankin	0.19 s	Kotlin	2023-05-04 23:28:29
7	Hidden user	0.20 s	Kotlin	2021-02-18 13:26:06
8	Chris Johnson	0.23 s	Kotlin	2025-02-26 21:45:31

#	User	Runtime	Language	Date
1	Peter Hairatidis	0.00 s	Lua	2025-12-02 23:11:07

#	User	Runtime	Language	Date
1	Josenildo Silva	0.00 s	OCaml	2019-10-27 15:49:23

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.01 s	Prolog	2019-06-09 09:56:49

#	User	Runtime	Language	Date
1	Christofer Ohlsson	0.02 s	Python 2	2015-04-03 11:58:30
2	Tore Norderud	0.02 s	Python 2	2015-04-19 16:28:42
3	Erik Odenman	0.02 s	Python 2	2015-05-15 00:25:33
4	Arne Tobias Malkenes Ødegaard	0.02 s	Python 2	2015-12-01 21:09:03
5	David Wetterau	0.02 s	Python 2	2016-02-27 19:43:52
6	Sagar Sharma	0.02 s	Python 2	2016-05-16 09:50:58
7	Syafiq Al Atiiq	0.02 s	Python 2	2016-07-07 21:03:00
8	Robert Slutsky	0.02 s	Python 2	2017-01-19 02:50:05
9	Hidden user	0.02 s	Python 2	2017-04-17 07:06:51
10	Allan Lago	0.02 s	Python 2	2017-05-12 03:23:08

#	User	Runtime	Language	Date
1	Hidden user	0.02 s	Python 3	2014-10-12 00:08:24
2	James Elías Sigurðarson	0.02 s	Python 3	2015-05-31 22:52:04
3	Baldur Tryggvason	0.02 s	Python 3	2015-08-04 15:19:52
4	Tomaž Kramer	0.02 s	Python 3	2015-08-17 21:04:56
5	Alenka Vavros	0.02 s	Python 3	2015-09-15 11:12:27
6	Adam Fazekas	0.02 s	Python 3	2015-10-29 17:51:50
7	Casper Hagenaars	0.02 s	Python 3	2015-11-15 12:17:11
8	Filip Sjögren	0.02 s	Python 3	2016-03-01 17:46:12
9	Terrence Reilly	0.02 s	Python 3	2016-03-09 03:52:34
10	Nathan Collins	0.02 s	Python 3	2016-08-09 00:24:05

#	User	Runtime	Language	Date
1	Casper Christensen	0.03 s	Ruby	2016-03-03 17:37:19
2	Hidden user	0.04 s	Ruby	2019-09-29 22:48:54
3	Macdara mac an tSionnaigh	0.04 s	Ruby	2019-10-08 20:02:45
4	Hidden user	0.05 s	Ruby	2019-10-09 16:37:44
5	Kieran Maharaj	0.05 s	Ruby	2021-01-03 21:48:45
6	Thomas Feld	0.06 s	Ruby	2023-08-21 12:24:45
7	Matzuka	0.07 s	Ruby	2025-11-25 19:46:06

#	User	Length	Language	Date
1	Arvid Jonasson	109	APL	2025-10-21 16:51:36

#	User	Length	Language	Date
1	Spock Tsai	203	C	2015-11-10 09:08:44
2	Zachariah Goldthorpe	231	C	2017-08-12 04:44:38
3	Dan Rubery	241	C	2015-04-11 16:04:37
4	Victor Davidsson	268	C	2019-06-17 18:08:17
5	April Clark	272	C	2021-09-15 18:51:10
6	Ian Wilkey	288	C	2022-06-22 20:23:52
7	James Rettie	290	C	2022-10-25 06:46:55
8	Ng Wei Jie	292	C	2020-02-18 11:15:07
9	Josh Long	293	C	2017-09-30 22:12:39
10	Hidden user	296	C	2017-11-17 01:53:56

#	User	Length	Language	Date
1	Klas af Geijerstam	454	C#	2017-04-11 16:36:37
2	traxex	502	C#	2024-05-27 18:34:39
3	Nathaniel McComas	751	C#	2022-11-04 06:17:17
4	Jens Erik	943	C#	2025-11-19 23:26:45
5	Simon Thillemann Nielsen	943	C#	2025-11-19 23:27:30
6	Márton Krauter	964	C#	2023-07-20 19:35:17
7	Wissam Al Hindi	996	C#	2018-05-21 15:42:18
8	Saša Levstik	999	C#	2016-11-15 17:37:08

#	User	Length	Language	Date
1	Peter Zhou	210	C++	2013-07-02 10:03:13
2	Ganapathy Sanath Balaji	232	C++	2019-08-12 10:04:38
3	Grae Yeandle	234	C++	2017-02-11 16:26:35
4	Zane Yu	238	C++	2018-12-11 14:01:58
5	Nicholas Chin	238	C++	2020-11-13 21:25:27
6	William Gan	241	C++	2017-02-24 08:16:21
7	Modan Han	242	C++	2015-12-03 03:06:08
8	Guillermo Hernández	246	C++	2021-01-05 14:02:42
9	Hamza Ba-mohammed	248	C++	2019-08-28 23:03:01
10	Mohamed Lamnaouar	254	C++	2019-03-29 23:59:42

#	User	Length	Language	Date
1	Timothy Bilik	755	Common Lisp	2022-09-24 18:33:18
2	Hidden user	882	Common Lisp	2022-08-17 23:36:20

#	User	Length	Language	Date
1	dick move	219	Crystal	2025-09-29 05:53:21

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1171	F#	2023-04-10 10:27:17

#	User	Length	Language	Date
1	Zachary Short	596	Go	2025-12-02 23:37:44
2	Norbert Voelker	766	Go	2021-08-27 01:34:11
3	Khin Nyunt	846	Go	2023-09-11 18:24:13

#	User	Length	Language	Date
1	Shing Tak Lam	461	Haskell	2021-03-12 11:30:18
2	Lars Tveito	521	Haskell	2015-08-13 18:17:29
3	Brent Yorgey	522	Haskell	2017-10-02 06:05:21
4	Tim Put	584	Haskell	2019-10-08 01:58:53
5	Johan Meier	619	Haskell	2016-12-06 10:24:12
6	Esther Chong	814	Haskell	2018-02-02 13:46:05
7	Steinar Simonnes	834	Haskell	2025-02-04 14:30:27
8	Rafał Gwoździński	1055	Haskell	2021-03-13 12:26:10
9	Aurélien Pepin	1207	Haskell	2019-10-03 19:01:30
10	Hidden user	2529	Haskell	2015-01-16 14:22:39

#	User	Length	Language	Date
1	Natalie Longtin	436	Java	2018-02-12 20:41:28
2	Andrew Heng	445	Java	2015-12-03 03:27:34
3	Doug Goodman	463	Java	2018-02-18 16:26:04
4	Mitch Price	466	Java	2015-09-14 15:47:01
5	Joshua Coward	467	Java	2020-06-05 18:08:14
6	Hidden user	468	Java	2016-11-04 20:15:16
7	R3P	471	Java	2023-02-25 01:28:22
8	Yang Li	472	Java	2018-03-23 21:56:19
9	Finn Lidbetter	476	Java	2016-06-22 16:28:37
10	Zimu Qin	477	Java	2015-09-24 13:39:44

#	User	Length	Language	Date
1	Khin Nyunt	1474	JavaScript (Node.js)	2021-11-22 16:22:25
2	Mike Anderson	5181	JavaScript (Node.js)	2019-02-12 02:00:06

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	286	JavaScript (SpiderMonkey)	2023-06-03 22:45:35
2	Bjørn Chr. Soltvedt	440	JavaScript (SpiderMonkey)	2017-11-09 02:11:39
3	Peter Kedemo	530	JavaScript (SpiderMonkey)	2016-01-01 09:57:28
4	Zach Tschetter	964	JavaScript (SpiderMonkey)	2023-06-15 20:35:09

#	User	Length	Language	Date
1	Timothy Gaede	452	Julia	2025-10-29 11:44:38
2	Hidden user	501	Julia	2025-03-17 20:56:12

#	User	Length	Language	Date
1	Filip Belik	395	Kotlin	2019-12-16 02:39:03
2	Chris Johnson	405	Kotlin	2025-02-26 21:45:31
3	Phường Lên	429	Kotlin	2019-12-13 03:32:34
4	Adam Koprowski	457	Kotlin	2021-12-29 21:27:04
5	Adam Rankin	629	Kotlin	2023-05-04 23:28:29
6	Jacob Huebner	721	Kotlin	2020-04-13 18:19:51
7	Thanh Le	1024	Kotlin	2020-09-25 01:10:42
8	Hidden user	1224	Kotlin	2021-02-18 13:26:06

#	User	Length	Language	Date
1	Peter Hairatidis	1006	Lua	2025-12-02 23:11:07

#	User	Length	Language	Date
1	Josenildo Silva	711	OCaml	2019-10-27 15:49:23

#	User	Length	Language	Date
1	Andriy Zyevakov	820	Prolog	2019-06-09 09:56:49

#	User	Length	Language	Date
1	Thomas Feld	226	Python 2	2020-06-23 09:58:26
2	Lars Åström	258	Python 2	2018-10-19 00:48:21
3	Justin Su	267	Python 2	2019-12-21 13:21:53
4	Haggai Liu	278	Python 2	2018-02-13 06:45:39
5	Conor McCauley	296	Python 2	2019-10-30 16:33:40
6	Andreas Björklund	300	Python 2	2019-05-16 20:48:10
7	Jesper Öqvist	321	Python 2	2019-08-15 01:41:41
8	Easton Bornemeier	334	Python 2	2018-01-11 10:35:49
9	Erik Odenman	343	Python 2	2015-05-15 00:25:33
10	Johann Ly	351	Python 2	2018-08-20 03:19:01

#	User	Length	Language	Date
1	Farzam Abrishami	161	Python 3	2024-01-28 13:21:36
2	David Aldenbro	161	Python 3	2025-10-20 14:47:07
3	Maxime Le Besnerais	181	Python 3	2023-12-20 17:01:15
4	Ahmed Chamseddine	181	Python 3	2025-08-23 23:35:16
5	Chung Yan Chow	197	Python 3	2026-02-27 23:00:50
6	Peter Stauder	199	Python 3	2022-09-25 21:08:56
7	Simon Baeckelant	202	Python 3	2024-05-09 23:15:41
8	Paco Criado	230	Python 3	2024-11-30 01:20:48
9	Christian Lindeström	235	Python 3	2016-10-04 19:06:22
10	Jan Laan	235	Python 3	2021-11-09 19:34:21

#	User	Length	Language	Date
1	Thomas Feld	93	Ruby	2023-08-21 12:30:36
2	Hidden user	243	Ruby	2019-09-29 22:48:54
3	Hidden user	311	Ruby	2019-10-09 16:37:44
4	Casper Christensen	314	Ruby	2016-03-03 17:37:19
5	Matzuka	356	Ruby	2025-11-25 19:46:06
6	Macdara mac an tSionnaigh	470	Ruby	2019-10-08 20:02:45
7	Kieran Maharaj	559	Ruby	2021-01-03 21:48:45

#	User	Length	Language	Date
1	Herman Karlsson	553	Rust	2019-11-03 21:06:40
2	David Rasch	705	Rust	2020-11-13 11:56:04
3	Rickard Mårtensson	916	Rust	2019-11-03 20:26:57
4	Leslie Yip	936	Rust	2022-11-15 10:37:46
5	Judith Hemp	945	Rust	2021-01-12 18:28:30
6	Eskil Queseth	992	Rust	2019-11-03 17:35:38
7	Bas Dirks	1044	Rust	2022-01-24 09:53:33
8	Eric Pinter	1172	Rust	2020-05-19 22:15:51
9	Brendan Gluth	1383	Rust	2021-03-10 23:54:58
10	Muhammad Rais Fathin Mudzakir	4100	Rust	2021-05-29 17:23:11

Solution running time distribution