Problem A
Quicksort — Problem Statistics

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Submissions	74831
Accepted submissions	30569
Submission ratio	40.85%
Authors	1930
Full solves [?]	1841
Full solve Ratio	95.39%

#	User	Runtime	Language	Date
1	Arvid Jonasson	0.35 s	APL	2025-06-16 22:10:18

#	User	Runtime	Language	Date
1	Ioannis Mouratidis	0.45 s	Bash	2023-03-07 21:39:37
2	Arvid Jonasson	0.50 s	Bash	2025-07-28 14:14:30
3	Simon Jutvreten	0.81 s	Bash	2024-02-29 23:02:05
4	Emma Ericsson	1.47 s	Bash	2024-04-02 12:49:04
5	Jonathan Hallström	2.52 s	Bash	2024-03-01 13:03:25
6	Dmitry Chirin	2.61 s	Bash	2025-02-25 15:12:12
7	Simon Kåhre	3.76 s	Bash	2025-02-25 12:01:31

#	User	Runtime	Language	Date
1	Arvid Jonasson	0.02 s	C	2024-02-25 03:37:57
2	Mathias Magnusson	0.03 s	C	2022-02-26 15:42:03
3	Victor Hernadi	0.03 s	C	2022-06-23 02:41:51
4	Emma Ericsson	0.03 s	C	2024-02-29 23:13:12
5	Anders Mouanga	0.03 s	C	2024-03-04 10:37:16
6	Ioannis Mouratidis	0.03 s	C	2024-03-04 21:02:00
7	Love Brandefelt	0.04 s	C	2018-02-27 01:11:48
8	Anton Lilja	0.04 s	C	2021-03-04 23:17:58
9	Timmy Lindholm	0.06 s	C	2019-04-07 04:07:40
10	Carl Chemnitz	0.06 s	C	2022-03-03 17:41:26

#	User	Runtime	Language	Date
1	Adam Abdulmohsen Abdulmajid	0.33 s	C#	2025-02-25 16:15:16
2	Ludvig Thulin	0.35 s	C#	2025-02-26 21:13:51
3	Staffan Al-Kadhimi	0.42 s	C#	2018-02-28 16:50:08
4	Hidden user	0.49 s	C#	2017-02-25 19:24:25
5	Olof Bengtsson	0.50 s	C#	2019-03-01 10:35:26
6	Hidden user	0.52 s	C#	2019-02-28 17:25:16
7	David Peilitz	0.58 s	C#	2022-05-27 16:21:18
8	Hugo Björs	0.70 s	C#	2022-03-01 18:08:56
9	Nils Malmberg	0.93 s	C#	2024-02-29 18:51:05
10	Karam Breji	1.21 s	C#	2024-02-28 01:58:13

#	User	Runtime	Language	Date
1	Arvid Jonasson	0.02 s	C++	2024-02-24 23:23:29
2	Mathias Magnusson	0.03 s	C++	2022-02-28 13:17:26
3	Tim Bergbom	0.03 s	C++	2023-03-06 18:27:51
4	Jonathan Hallström	0.03 s	C++	2024-02-28 15:28:36
5	Anders Mouanga	0.03 s	C++	2024-03-04 10:46:03
6	Wilmer Johansen	0.03 s	C++	2025-06-04 04:27:41
7	Simon Lindholm	0.04 s	C++	2017-03-05 23:53:22
8	Love Brandefelt	0.04 s	C++	2018-02-26 20:36:16
9	Rickard Mårtensson	0.04 s	C++	2021-03-05 00:34:50
10	Hannes Bredberg	0.05 s	C++	2021-03-04 18:05:35

#	User	Runtime	Language	Date
1	Vincent Lindvall	3.58 s	COBOL	2022-03-05 01:59:14

#	User	Runtime	Language	Date
1	Einar Persson	1.17 s	Common Lisp	2021-03-03 21:13:52
2	Albert Ståhl Bryggö	1.22 s	Common Lisp	2025-02-24 22:10:02

#	User	Runtime	Language	Date
1	Alfons Stoltz	0.21 s	C++ with GMP	2025-02-28 10:31:20

#	User	Runtime	Language	Date
1	Arvid Jonasson	0.03 s	Go	2024-02-28 04:43:38
2	Theo Emanuelsson	0.09 s	Go	2025-03-01 16:38:00
3	Mathias Magnusson	0.16 s	Go	2022-04-01 23:19:06
4	Timmy Lindholm	0.24 s	Go	2019-03-21 05:24:44
5	Jonathan Erikson	0.32 s	Go	2020-03-01 00:10:55
6	Gabriel Skoglund	0.35 s	Go	2021-03-13 23:44:39
7	Tore Stenberg	0.36 s	Go	2023-03-06 11:04:50
8	Ricky Molen	0.51 s	Go	2019-02-25 13:20:11
9	Hidden user	0.63 s	Go	2019-02-28 17:18:31
10	Glenn Olsson	0.72 s	Go	2020-03-04 12:06:39

#	User	Runtime	Language	Date
1	Tomas Möre	0.81 s	Haskell	2016-03-13 18:39:49
2	Mikael Kemstedt	1.43 s	Haskell	2025-02-22 18:18:44
3	Hidden user	1.50 s	Haskell	2018-12-01 16:12:12
4	Gabriel Skoglund	2.51 s	Haskell	2020-03-03 23:40:51
5	Theodor Ström	2.87 s	Haskell	2022-10-10 20:07:26
6	Mille	2.90 s	Haskell	2025-04-27 19:30:36
7	Mathias Magnusson	2.93 s	Haskell	2023-02-27 13:26:04
8	Jesper Sandström	2.97 s	Haskell	2018-05-01 19:25:59
9	Oskar Strömberg	3.01 s	Haskell	2021-05-31 17:22:14
10	Tobias Mattsson	3.08 s	Haskell	2020-02-29 17:13:32

#	User	Runtime	Language	Date
1	Victor Hernadi	0.19 s	Java	2022-03-04 00:29:18
2	Didrik Madheden	0.29 s	Java	2020-02-23 08:26:58
3	Love Brandefelt	0.37 s	Java	2018-02-23 21:38:55
4	Oliver Eriksson	0.39 s	Java	2018-02-23 22:27:50
5	Herman Karlsson	0.42 s	Java	2018-03-02 11:43:49
6	Axel Lindeberg	0.44 s	Java	2019-02-25 22:16:56
7	Elliot Smith	0.44 s	Java	2024-10-30 19:41:35
8	Paul Vinell	0.46 s	Java	2018-03-02 16:43:15
9	Arvid Jonasson	0.47 s	Java	2024-02-28 00:16:56
10	Jonathan Erikson	0.48 s	Java	2020-02-26 20:58:44

#	User	Runtime	Language	Date
1	Mikael Kökeritz	0.43 s	JavaScript (Node.js)	2025-02-21 20:26:15
2	Milad Ahmadpour	0.49 s	JavaScript (Node.js)	2025-02-27 12:51:09
3	Leo Andersson Guillou	0.68 s	JavaScript (Node.js)	2025-02-27 22:00:16

#	User	Runtime	Language	Date
1	Arvid Jonasson	0.66 s	Julia	2025-06-10 19:01:52
2	Algot Levin	2.68 s	Julia	2025-03-05 16:51:18

#	User	Runtime	Language	Date
1	Gustav Häggström	0.96 s	Kotlin	2025-02-25 23:04:19
2	Hugo Björs	1.29 s	Kotlin	2022-03-01 15:17:02
3	Vincent Lagerros	3.13 s	Kotlin	2022-03-01 23:32:47

#	User	Runtime	Language	Date
1	Ludvig Williamson	0.71 s	Lua	2025-02-26 23:04:47
2	Olle Björk	0.74 s	Lua	2025-02-28 10:31:09

#	User	Runtime	Language	Date
1	Einar Persson	0.12 s	Objective-C	2021-03-03 22:13:06
2	Dante Norling	0.18 s	Objective-C	2025-02-24 21:08:34

#	User	Runtime	Language	Date
1	Ludvig Oderud	0.43 s	OCaml	2025-02-25 11:29:56

#	User	Runtime	Language	Date
1	Einar Persson	0.20 s	Pascal	2021-03-03 19:00:42

#	User	Runtime	Language	Date
1	Alfred Fall Lindgren	0.25 s	PHP	2025-02-26 12:26:53
2	Dmitry Chirin	0.27 s	PHP	2025-02-25 13:30:01
3	Joel Simonsson	0.63 s	PHP	2025-04-09 09:46:04
4	David Nilsson	0.88 s	PHP	2025-02-25 09:41:44
5	Anton Lyxell	1.78 s	PHP	2016-03-09 21:51:08

#	User	Runtime	Language	Date
1	Peter Lindvall	3.43 s	Prolog	2025-02-26 15:22:00
2	Muhammed Reza Mehdi Hamid Muhammed	3.48 s	Prolog	2025-02-26 13:27:06

#	User	Runtime	Language	Date
1	Hidden user	0.10 s	Python 2	2019-11-01 15:55:10
2	Victor Hernadi	0.16 s	Python 2	2022-06-22 18:42:53
3	Axel Lindeberg	0.28 s	Python 2	2019-03-10 19:33:40
4	Elliot Smith	0.28 s	Python 2	2024-03-25 01:06:00

#	User	Runtime	Language	Date
1	Victor Hernadi	0.17 s	Python 3	2022-06-22 18:24:53
2	Natan Odin Herman Hyötyläinen	0.28 s	Python 3	2024-02-28 10:22:15
3	Castor Mann	0.29 s	Python 3	2023-03-03 11:17:25
4	Elias Floreteng	0.30 s	Python 3	2022-03-04 00:07:43
5	Jonathan Hallström	0.30 s	Python 3	2024-02-28 22:25:08
6	Leopold Hermansson	0.31 s	Python 3	2021-02-26 14:51:53
7	Oskar Henriksson	0.31 s	Python 3	2021-03-01 16:03:50
8	Ivar Boqvist	0.31 s	Python 3	2023-03-01 03:07:25
9	Ioannis Mouratidis	0.31 s	Python 3	2023-03-07 17:03:01
10	Bernard Rumar	0.31 s	Python 3	2024-04-12 13:17:32

#	User	Runtime	Language	Date
1	Elliot Smith	0.32 s	Python 3 with NumPy	2024-02-28 01:49:04
2	Arvid Jonasson	1.16 s	Python 3 with NumPy	2024-03-25 00:57:12
3	Jonathan Hallström	2.40 s	Python 3 with NumPy	2024-04-12 10:29:44
4	Ivar Boqvist	2.77 s	Python 3 with NumPy	2023-03-03 14:33:24

#	User	Runtime	Language	Date
1	Hjalmar Albinsson	0.49 s	Ruby	2025-02-28 11:21:03
2	Simon Jutvreten	0.51 s	Ruby	2024-02-28 17:32:49
3	Dmitry Chirin	0.61 s	Ruby	2023-03-07 18:18:26
4	Ossian Stange	0.66 s	Ruby	2025-08-28 13:59:27
5	Marcus Elg	2.03 s	Ruby	2022-02-28 13:53:42

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.02 s	Rust	2025-08-19 01:34:27
2	Mathias Magnusson	0.04 s	Rust	2022-03-01 14:22:12
3	Christofer Nolander	0.06 s	Rust	2019-03-01 19:01:47
4	Wilmer Johansen	0.06 s	Rust	2024-02-28 02:24:18
5	Love Brandefelt	0.08 s	Rust	2019-02-14 02:18:58
6	ersode	0.08 s	Rust	2019-02-27 05:20:58
7	Gustaf Blomqvist	0.08 s	Rust	2019-10-14 23:28:26
8	Adrian Salamon	0.08 s	Rust	2021-02-26 16:18:51
9	Rickard Mårtensson	0.08 s	Rust	2021-03-05 02:17:22
10	Sebastian Svensson	0.08 s	Rust	2024-02-27 18:49:33

#	User	Runtime	Language	Date
1	Johan Lysemark	0.60 s	Swift	2025-02-27 19:47:36
2	Buster Hansing	0.65 s	Swift	2025-03-03 13:26:49

#	User	Runtime	Language	Date
1	Natan Söderström	0.43 s	TypeScript	2025-03-18 14:56:44
2	Amos Peltonen	0.67 s	TypeScript	2025-04-16 17:36:48

#	User	Runtime	Language	Date
1	Jonathan Hallström	0.02 s	Zig	2024-02-25 14:41:34
2	Erik Frankling	0.03 s	Zig	2024-03-13 03:13:18
3	Vidar Hultman	0.05 s	Zig	2025-04-17 16:12:47
4	Simon Jutvreten	0.07 s	Zig	2024-02-27 19:58:44
5	Hidden user	0.08 s	Zig	2024-02-27 19:40:19
6	Alexander Björkman	0.12 s	Zig	2024-03-01 03:49:03

#	User	Length	Language	Date
1	Arvid Jonasson	38	APL	2025-09-04 22:47:53

#	User	Length	Language	Date
1	Arvid Jonasson	22	Bash	2025-07-28 14:48:48
2	Ioannis Mouratidis	24	Bash	2023-03-07 22:49:59
3	Emma Ericsson	24	Bash	2024-04-02 13:25:33
4	Jonathan Hallström	41	Bash	2024-03-01 13:03:25
5	Dmitry Chirin	41	Bash	2025-02-25 15:12:12
6	Simon Jutvreten	50	Bash	2024-02-29 23:02:05
7	Simon Kåhre	79	Bash	2025-02-25 12:01:31

#	User	Length	Language	Date
1	Arvid Jonasson	64	C	2025-07-29 00:54:25
2	Axel Lindeberg	342	C	2019-02-23 17:24:28
3	Ioannis Mouratidis	406	C	2024-03-03 17:40:30
4	Alexander Runebou	524	C	2023-02-28 12:42:25
5	Simon Blom	565	C	2017-02-26 07:28:34
6	Elliot Skogsberg Rydell	587	C	2024-02-26 22:02:36
7	Anton Lyxell	699	C	2016-03-03 21:33:00
8	Tommy Bergman	731	C	2024-02-24 01:38:40
9	Viktor Edström	757	C	2018-02-23 19:03:39
10	Aron Bergman	805	C	2020-02-29 21:44:51

#	User	Length	Language	Date
1	Leonardo Rezza	547	C#	2021-03-02 17:56:09
2	Hidden user	750	C#	2019-02-28 17:11:28
3	Hugo Björs	843	C#	2022-03-01 18:08:56
4	Ludvig Thulin	1393	C#	2025-02-26 21:35:55
5	Karam Breji	1872	C#	2024-02-28 01:58:13
6	Nils Malmberg	1947	C#	2024-02-29 19:01:50
7	Olof Bengtsson	2027	C#	2019-02-27 14:32:09
8	Didzis Urtãns	2301	C#	2025-04-28 14:58:49
9	David Peilitz	2575	C#	2022-05-27 16:21:18
10	Adam Abdulmohsen Abdulmajid	3607	C#	2025-02-22 23:36:43

#	User	Length	Language	Date
1	Arvid Jonasson	55	C++	2025-07-29 00:49:24
2	Anders Mouanga	241	C++	2024-02-29 16:45:59
3	Axel Lindeberg	260	C++	2018-12-16 18:44:22
4	Fredrik Hernqvist	284	C++	2017-02-28 21:47:30
5	Gustaf Blomqvist	284	C++	2019-10-15 01:15:31
6	Arvid Kristoffersson	293	C++	2025-03-17 21:43:44
7	Hidden user	298	C++	2020-05-22 03:03:02
8	Jesper Lidbaum	302	C++	2020-02-25 21:19:27
9	Erik Dackander	309	C++	2016-03-03 23:39:55
10	Hidden user	330	C++	2016-03-03 23:20:42

#	User	Length	Language	Date
1	Vincent Lindvall	7834	COBOL	2022-03-05 01:59:14

#	User	Length	Language	Date
1	Albert Ståhl Bryggö	1308	Common Lisp	2025-02-24 22:03:28
2	Einar Persson	1830	Common Lisp	2021-03-03 21:13:52

#	User	Length	Language	Date
1	Alfons Stoltz	1828	C++ with GMP	2025-02-28 10:31:20

#	User	Length	Language	Date
1	Hidden user	518	Go	2019-02-28 17:18:31
2	Axel Lindeberg	525	Go	2019-02-23 15:43:36
3	Ricky Molen	796	Go	2019-02-25 10:26:53
4	Gabriel Skoglund	953	Go	2021-03-13 23:24:35
5	Arvid Jonasson	1117	Go	2024-02-28 03:46:37
6	Glenn Olsson	1221	Go	2020-03-04 12:06:39
7	David Mellin	1329	Go	2017-03-27 18:22:10
8	Hidden user	1346	Go	2020-02-04 20:36:07
9	Mathias Magnusson	1351	Go	2022-04-01 23:20:18
10	Lars Hummelgren	1389	Go	2016-03-10 19:17:42

#	User	Length	Language	Date
1	Theodor Ström	86	Haskell	2022-10-10 20:27:46
2	Mikael Kemstedt	92	Haskell	2025-02-22 17:43:42
3	Mille	100	Haskell	2025-04-27 19:30:36
4	Mathias Magnusson	112	Haskell	2023-02-27 13:26:04
5	Oskar Strömberg	114	Haskell	2021-05-31 17:22:14
6	Elliot Smith	156	Haskell	2024-02-28 02:31:49
7	Jesper Sandström	228	Haskell	2018-05-01 19:25:59
8	Hidden user	300	Haskell	2018-12-01 16:12:12
9	Tomas Möre	643	Haskell	2016-03-04 00:25:16
10	Gabriel Skoglund	731	Haskell	2020-03-03 23:40:51

#	User	Length	Language	Date
1	Alexander Runebou	89	Java	2023-02-27 23:25:04
2	Alfred Malmström	89	Java	2024-02-29 15:24:13
3	Elliot Smith	89	Java	2024-03-03 18:36:11
4	Jacob Sörme	113	Java	2016-03-02 18:46:52
5	Hidden user	116	Java	2016-11-17 13:11:03
6	Niklas Tomsic	123	Java	2018-11-30 16:47:51
7	David Stevens	127	Java	2017-02-16 22:15:42
8	Emma Ericsson	127	Java	2024-02-27 22:26:55
9	Hidden user	129	Java	2020-02-27 10:57:40
10	Hidden user	133	Java	2016-03-02 14:54:19

#	User	Length	Language	Date
1	Leo Andersson Guillou	754	JavaScript (Node.js)	2025-02-27 22:02:45
2	Mikael Kökeritz	2068	JavaScript (Node.js)	2025-02-21 20:26:15
3	Milad Ahmadpour	2367	JavaScript (Node.js)	2025-02-27 13:01:33

#	User	Length	Language	Date
1	Arvid Jonasson	59	Julia	2025-06-10 19:01:52
2	Algot Levin	1444	Julia	2025-03-05 16:51:18

#	User	Length	Language	Date
1	Vincent Lagerros	1174	Kotlin	2022-03-01 23:32:47
2	Hugo Björs	1222	Kotlin	2022-03-01 15:17:02
3	Gustav Häggström	1950	Kotlin	2025-02-25 23:04:19

#	User	Length	Language	Date
1	Ludvig Williamson	110	Lua	2025-02-26 23:34:24
2	Olle Björk	550	Lua	2025-02-24 19:01:48

#	User	Length	Language	Date
1	Dante Norling	1064	Objective-C	2025-02-26 13:31:38
2	Einar Persson	2533	Objective-C	2021-03-03 22:13:06

#	User	Length	Language	Date
1	Ludvig Oderud	454	OCaml	2025-02-25 11:29:56

#	User	Length	Language	Date
1	Einar Persson	2195	Pascal	2021-03-03 18:57:37

#	User	Length	Language	Date
1	Alfred Fall Lindgren	65	PHP	2025-02-26 14:05:30
2	Dmitry Chirin	75	PHP	2025-02-25 13:54:31
3	David Nilsson	82	PHP	2025-02-25 16:20:12
4	Anton Lyxell	794	PHP	2016-03-09 21:53:44
5	Joel Simonsson	2060	PHP	2025-04-09 09:46:04

#	User	Length	Language	Date
1	Muhammed Reza Mehdi Hamid Muhammed	599	Prolog	2025-02-26 14:22:51
2	Peter Lindvall	2244	Prolog	2025-02-26 12:19:34

#	User	Length	Language	Date
1	Elliot Smith	55	Python 2	2024-03-25 01:02:46
2	Victor Hernadi	131	Python 2	2022-03-06 14:12:40
3	Axel Lindeberg	291	Python 2	2019-03-10 19:33:40
4	Hidden user	18157	Python 2	2019-11-01 15:55:10

#	User	Length	Language	Date
1	Castor Mann	43	Python 3	2023-03-03 11:51:12
2	Adam Viberg	43	Python 3	2023-03-07 18:53:41
3	Arvid Jonasson	43	Python 3	2024-02-28 02:05:01
4	Natan Odin Herman Hyötyläinen	43	Python 3	2024-02-28 10:32:06
5	Elliot Smith	43	Python 3	2024-03-25 00:59:12
6	Dmitry Chirin	43	Python 3	2025-02-25 14:38:29
7	Mathias Magnusson	44	Python 3	2023-02-27 13:16:41
8	Bernard Rumar	44	Python 3	2023-03-03 22:22:18
9	Ioannis Mouratidis	44	Python 3	2023-03-07 17:03:01
10	Hidden user	44	Python 3	2024-02-28 17:29:03

#	User	Length	Language	Date
1	Arvid Jonasson	43	Python 3 with NumPy	2024-03-25 00:56:35
2	Elliot Smith	43	Python 3 with NumPy	2024-03-25 00:58:31
3	Jonathan Hallström	116	Python 3 with NumPy	2024-04-12 10:27:41
4	Ivar Boqvist	169	Python 3 with NumPy	2023-03-03 14:33:24

#	User	Length	Language	Date
1	Dmitry Chirin	37	Ruby	2023-03-07 18:18:26
2	Simon Jutvreten	43	Ruby	2024-02-28 17:43:02
3	Ossian Stange	44	Ruby	2025-08-28 13:59:27
4	Hjalmar Albinsson	149	Ruby	2025-02-28 12:54:16
5	Marcus Elg	1123	Ruby	2022-02-28 13:53:42

#	User	Length	Language	Date
1	Marcus Nilszén	343	Rust	2021-03-05 13:55:48
2	Oskar Strömberg	349	Rust	2020-10-24 01:29:11
3	Emil Gestsson	360	Rust	2021-03-04 12:29:20
4	Martin Jansson	381	Rust	2025-02-27 17:51:16
5	Axel Lindeberg	450	Rust	2019-02-22 23:57:52
6	Eskil Queseth	465	Rust	2020-02-28 21:47:22
7	Henrik Larsson	479	Rust	2025-02-28 01:22:51
8	Adrian Salamon	499	Rust	2021-02-26 16:18:51
9	Linus Bredin	505	Rust	2025-02-27 01:48:07
10	Fritiof Rusck	508	Rust	2024-02-26 11:32:27

#	User	Length	Language	Date
1	Buster Hansing	222	Swift	2025-03-03 13:26:49
2	Johan Lysemark	2224	Swift	2025-02-27 19:47:36

#	User	Length	Language	Date
1	Amos Peltonen	225	TypeScript	2025-04-16 17:36:48
2	Natan Söderström	401	TypeScript	2025-02-25 01:03:27

#	User	Length	Language	Date
1	Simon Jutvreten	769	Zig	2024-02-26 10:59:45
2	Jonathan Hallström	1732	Zig	2024-02-23 23:05:11
3	Hidden user	2172	Zig	2024-02-27 19:40:19
4	Alexander Björkman	3085	Zig	2024-03-01 02:59:12
5	Erik Frankling	4832	Zig	2024-03-13 03:13:18
6	Vidar Hultman	5231	Zig	2025-04-17 16:12:47

Solution running time distribution