Problem A
N-Puzzle — Problem Statistics

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Submissions	4067
Accepted submissions	2380
Submission ratio	58.52%
Authors	2272
Full solves [?]	2106
Full solve Ratio	92.69%

#	User	Runtime	Language	Date
1	masosz	0.02 s	C#	2015-03-14 10:43:59
2	Mads Storm Hansen	0.02 s	C#	2015-07-22 00:12:18
3	Arnar Bjarni Arnarson	0.02 s	C#	2015-10-13 17:57:15
4	Andriy Zyevakov	0.02 s	C#	2015-10-16 11:15:07
5	Pontus Magnusson	0.02 s	C#	2016-05-18 13:32:56
6	Mesut Ekici	0.02 s	C#	2016-10-22 04:50:15
7	Przemysław Curzytek	0.02 s	C#	2016-12-05 00:14:32
8	Barnaby Malaj	0.02 s	C#	2017-09-29 14:40:09
9	Ong Kok Ting	0.02 s	C#	2017-09-29 15:04:24
10	Arne Hatlen	0.02 s	C#	2017-10-12 22:55:24

#	User	Runtime	Language	Date
1	Bobby Jonathan	0.01 s	Dart	2023-07-25 07:24:43

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.05 s	F#	2022-11-15 19:55:18

#	User	Runtime	Language	Date
1	Dustin Ward	0.00 s	Go	2023-09-16 04:12:39
2	Thomas	0.00 s	Go	2024-01-18 01:28:16
3	Jonas Mittnacht	0.00 s	Go	2024-01-31 15:15:33
4	Andini Anissa	0.00 s	Go	2025-12-15 08:54:43
5	Josh Howard	0.00 s	Go	2026-02-25 18:12:51
6	Norbert Voelker	0.07 s	Go	2021-05-14 20:28:29
7	dick move	0.07 s	Go	2021-05-27 21:47:43
8	Torbjørn Eikli Smørgrav	0.08 s	Go	2015-04-14 21:38:27
9	Anthony Alves	0.08 s	Go	2017-01-29 00:40:56
10	Izhari Ishak Aksa	0.08 s	Go	2021-08-24 08:14:18

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Haskell	2014-12-15 23:29:11
2	Hidden user	0.00 s	Haskell	2015-02-20 13:28:35
3	Lars Tveito	0.00 s	Haskell	2015-09-21 00:08:45
4	Wilfried van Asten	0.00 s	Haskell	2015-12-19 19:44:41
5	Patrik Lilja	0.00 s	Haskell	2016-02-14 10:40:14
6	姚锦铭	0.00 s	Haskell	2017-03-14 18:11:58
7	Brent Yorgey	0.00 s	Haskell	2017-11-11 01:06:34
8	Steinar Simonnes	0.00 s	Haskell	2024-02-25 12:59:30
9	Johan Arnör	0.01 s	Haskell	2016-05-04 21:42:34
10	Hidden user	0.01 s	Haskell	2019-10-26 18:44:15

#	User	Runtime	Language	Date
1	Achim Ahlers	0.04 s	Java	2024-10-04 17:18:07
2	Julius Griebel	0.04 s	Java	2024-11-01 19:44:21
3	Stela Palii	0.04 s	Java	2024-12-01 00:08:03
4	Guangyi Zhou	0.04 s	Java	2024-12-01 15:59:49
5	TobiasZ	0.04 s	Java	2025-12-28 16:32:29
6	Xavier Sercia	0.04 s	Java	2026-02-02 14:57:16
7	Maxx_Qc	0.04 s	Java	2026-02-02 16:02:40
8	Émile Laforce	0.04 s	Java	2026-02-02 17:01:07
9	Marius Mandrescu	0.04 s	Java	2026-02-07 18:18:29
10	Henrik Kristiansson	0.05 s	Java	2011-09-22 14:19:51

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	JavaScript (Node.js)	2024-04-09 23:14:10
2	Hidden user	0.05 s	JavaScript (Node.js)	2025-01-18 05:33:36
3	Samuel Högfeldt	0.08 s	JavaScript (Node.js)	2022-07-25 10:01:08

#	User	Runtime	Language	Date
1	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2015-12-29 20:12:38
2	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-03-06 23:07:43
3	Paul Leung	0.01 s	JavaScript (SpiderMonkey)	2017-05-30 16:55:51
4	Nicklas Utgaard	0.01 s	JavaScript (SpiderMonkey)	2017-10-12 18:20:55
5	Peter Menyes	0.02 s	JavaScript (SpiderMonkey)	2021-11-07 12:38:37
6	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-01-29 10:20:18
7	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2024-07-15 00:25:55

#	User	Runtime	Language	Date
1	Timothy Gaede	0.59 s	Julia	2024-04-04 04:35:58

#	User	Runtime	Language	Date
1	James WIlliams	0.13 s	Kotlin	2020-12-29 18:58:41
2	Sam Keyser	0.13 s	Kotlin	2022-06-13 02:05:21
3	Johnny Baloney	0.14 s	Kotlin	2022-02-15 12:13:30
4	Marcin Wiśniowski	0.15 s	Kotlin	2017-09-29 13:08:31
5	Ola Sundell	0.16 s	Kotlin	2020-08-21 14:05:33
6	Roger Bongers	0.16 s	Kotlin	2021-06-27 16:25:52
7	Bradley Richards	0.16 s	Kotlin	2023-03-06 11:23:48
8	Chris Johnson	0.18 s	Kotlin	2023-07-31 15:03:19
9	Jussif Abdel-Rahman	0.18 s	Kotlin	2024-04-30 11:08:34
10	Xevion	0.19 s	Kotlin	2022-02-12 19:13:59

#	User	Runtime	Language	Date
1	Shehab Ahmed Hatem	0.00 s	Lua	2023-12-04 17:38:34
2	Greg Gorlen	0.00 s	Lua	2024-02-01 08:30:07

#	User	Runtime	Language	Date
1	Sebastian Banert	0.00 s	OCaml	2024-08-30 14:57:52

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Odin	2025-05-24 23:00:23

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2018-03-20 20:33:44
2	Hidden user	0.00 s	Pascal	2020-04-21 04:23:54
3	David Connolly	0.00 s	Pascal	2021-11-29 17:38:43

#	User	Runtime	Language	Date
1	Björn Åhlander	0.01 s	PHP	2015-03-20 23:57:51

#	User	Runtime	Language	Date
1	Hadi Qovaizi	0.01 s	Prolog	2018-07-02 01:21:35
2	Hakan Kjellerstrand	0.02 s	Prolog	2023-03-05 19:15:36

#	User	Runtime	Language	Date
1	Gustav Sennton	0.02 s	Python 2	2011-09-26 22:40:02
2	Daniel Palmqvist	0.02 s	Python 2	2015-01-17 16:36:18
3	Jonas Kylling	0.02 s	Python 2	2015-01-20 21:57:27
4	Paulo Bu	0.02 s	Python 2	2015-02-24 14:42:57
5	Hidden user	0.02 s	Python 2	2015-03-12 12:03:28
6	Erik Odenman	0.02 s	Python 2	2015-05-15 01:01:04
7	Christofer Ohlsson	0.02 s	Python 2	2015-05-21 16:49:15
8	Quan Huynh	0.02 s	Python 2	2015-09-10 11:51:58
9	Tore Norderud	0.02 s	Python 2	2015-09-19 12:11:35
10	Izzati Al Vandiar	0.02 s	Python 2	2015-11-07 17:15:24

#	User	Runtime	Language	Date
1	Hidden user	0.02 s	Python 3	2014-10-09 13:53:02
2	James Elías Sigurðarson	0.02 s	Python 3	2015-05-31 23:57:17
3	Sasa	0.02 s	Python 3	2015-09-12 12:51:38
4	Simen Keiland Fondevik	0.02 s	Python 3	2016-08-17 20:40:34
5	Elsie Mestl	0.02 s	Python 3	2016-08-17 20:43:20
6	Kyle June	0.02 s	Python 3	2016-09-10 05:29:15
7	Brian Bauman	0.02 s	Python 3	2016-09-12 13:49:59
8	Joshua Guerin	0.02 s	Python 3	2016-10-22 23:13:34
9	Josenildo Silva	0.02 s	Python 3	2016-11-15 23:41:12
10	Joey Chan	0.02 s	Python 3	2017-02-17 05:09:40

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Ruby	2023-03-31 09:28:48
2	Matzuka	0.06 s	Ruby	2025-11-07 17:35:28
3	Eugen Neagoe	0.07 s	Ruby	2026-03-19 00:02:10

#	User	Runtime	Language	Date
1	Isak Jägberg	0.00 s	Rust	2019-05-05 20:05:49
2	Pahlevi Fikri Auliya	0.00 s	Rust	2020-11-19 00:09:51
3	Bas Dirks	0.00 s	Rust	2022-01-07 17:47:41
4	Hidden user	0.00 s	Rust	2023-06-03 06:31:41
5	Freek van Keulen	0.00 s	Rust	2023-10-13 17:44:59
6	Pankajkumar Patro	0.00 s	Rust	2024-11-03 17:37:27
7	Vincent Lagerros	0.00 s	Rust	2025-02-23 01:31:22
8	Emil Dichmann	0.00 s	Rust	2025-10-04 14:20:13
9	Egor Kulikov	0.00 s	Rust	2025-10-14 14:01:54
10	Joe Blower	0.00 s	Rust	2025-11-10 18:15:42

#	User	Length	Language	Date
1	Niklas Rosén	295	C	2011-10-26 03:08:14
2	Edgar Quiroz	339	C	2018-04-13 00:53:30
3	Niklas Nordmark	355	C	2011-09-23 11:22:05
4	Phan Ngoc Lan	358	C	2016-08-28 04:03:35
5	Mirel Cosulschi	390	C	2022-12-04 16:54:13
6	Raymond Yang	398	C	2021-08-29 02:31:52
7	Julian Duniec	422	C	2023-08-18 11:06:08
8	April Clark	510	C	2024-10-14 16:58:35
9	Bingkun	555	C	2017-09-29 13:18:44
10	应泽良	568	C	2017-09-29 13:20:03

#	User	Length	Language	Date
1	traxex	267	C#	2024-05-26 15:40:58
2	Esty Crow	395	C#	2024-03-02 20:19:01
3	Anthony Ye	417	C#	2024-03-10 20:25:11
4	Theodore Dahlqvist	479	C#	2026-02-06 00:01:40
5	Mesut Ekici	517	C#	2016-10-22 04:50:15
6	Göran Andersson	576	C#	2022-05-21 16:46:35
7	Sebastian Garcia	655	C#	2019-02-16 01:18:41
8	Alex Marcolina	661	C#	2018-04-13 21:32:02
9	Arnar Bjarni Arnarson	720	C#	2015-10-13 17:57:15
10	Frian Tampake	792	C#	2023-04-06 11:33:00

#	User	Length	Language	Date
1	Irawan Tanudirdjo	255	C++	2025-08-08 10:49:13
2	Irawan	255	C++	2025-10-31 14:59:25
3	William Gan	276	C++	2016-03-23 07:03:53
4	Mic Rey	277	C++	2025-08-08 10:46:59
5	Frederick Pek	289	C++	2021-06-26 11:52:30
6	Víctor Almendra Hernández	296	C++	2018-04-06 22:06:54
7	Alejandro Martínez Torres	296	C++	2018-04-07 08:22:19
8	Govind Venugopalan	306	C++	2017-01-02 07:34:39
9	Kai Yuan Thng	309	C++	2017-02-14 05:52:59
10	Eimhin McDonald	311	C++	2018-03-30 09:26:14

#	User	Length	Language	Date
1	Bobby Jonathan	1084	Dart	2023-07-25 07:24:43

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	839	F#	2022-11-15 19:55:18

#	User	Length	Language	Date
1	dick move	393	Go	2021-05-27 21:47:43
2	Torbjørn Eikli Smørgrav	501	Go	2015-04-14 21:38:27
3	Anthony Alves	696	Go	2017-01-29 00:40:56
4	Andini Anissa	981	Go	2025-12-15 08:54:43
5	Norbert Voelker	1002	Go	2021-05-14 20:28:29
6	Jonas Mittnacht	1024	Go	2024-01-31 15:15:33
7	Thomas	1075	Go	2024-01-18 01:28:16
8	Izhari Ishak Aksa	1091	Go	2021-08-24 08:14:18
9	Dustin Ward	1282	Go	2023-09-16 04:12:39
10	Josh Howard	2169	Go	2026-02-25 18:12:51

#	User	Length	Language	Date
1	Steinar Simonnes	443	Haskell	2024-02-25 12:59:30
2	Lars Tveito	480	Haskell	2015-09-21 00:08:45
3	Patrik Lilja	504	Haskell	2016-02-14 10:40:14
4	姚锦铭	579	Haskell	2017-03-14 18:11:58
5	Jan Hrček	602	Haskell	2021-03-19 07:19:58
6	Hidden user	752	Haskell	2014-12-15 23:29:11
7	Brent Yorgey	837	Haskell	2017-11-11 01:06:34
8	Johan Arnör	888	Haskell	2016-05-04 21:42:34
9	Gaston Gilbert	1404	Haskell	2020-11-01 17:30:13
10	Hidden user	2293	Haskell	2015-02-20 13:28:35

#	User	Length	Language	Date
1	Simon Xue	436	Java	2015-11-15 22:09:59
2	Duncan Page	459	Java	2017-09-11 23:41:22
3	Ryan Looney	462	Java	2019-04-06 06:37:26
4	Ali Pervaiz	482	Java	2019-03-26 21:05:31
5	Simon Klein	484	Java	2011-10-09 12:37:46
6	Benjamin Yue	485	Java	2017-01-30 00:54:52
7	Junjiang Li	486	Java	2018-09-29 06:36:52
8	Jayson Rook	519	Java	2016-09-21 02:25:55
9	Sam Chambré	564	Java	2017-02-23 03:15:42
10	Juan Sebastián Prada Calderón	566	Java	2017-06-30 18:31:44

#	User	Length	Language	Date
1	Hidden user	803	JavaScript (Node.js)	2024-04-09 23:14:10
2	Samuel Högfeldt	1051	JavaScript (Node.js)	2022-07-25 10:01:08
3	Hidden user	1178	JavaScript (Node.js)	2025-01-18 05:33:36

#	User	Length	Language	Date
1	Jimmy Gustafsson	161	JavaScript (SpiderMonkey)	2024-07-15 00:25:55
2	Christian Pilegaard Cederquist	405	JavaScript (SpiderMonkey)	2023-01-29 10:20:18
3	Bjørn Chr. Soltvedt	443	JavaScript (SpiderMonkey)	2016-03-06 23:07:43
4	Peter Menyes	486	JavaScript (SpiderMonkey)	2021-11-07 12:38:37
5	Peter Kedemo	550	JavaScript (SpiderMonkey)	2015-12-29 20:12:38
6	Nicklas Utgaard	654	JavaScript (SpiderMonkey)	2017-10-12 18:20:55
7	Paul Leung	918	JavaScript (SpiderMonkey)	2017-05-30 16:55:51

#	User	Length	Language	Date
1	Timothy Gaede	502	Julia	2024-04-04 04:35:58

#	User	Length	Language	Date
1	Sam Keyser	430	Kotlin	2022-06-13 04:25:51
2	Adam Rankin	434	Kotlin	2023-05-03 06:45:52
3	Bradley Richards	488	Kotlin	2023-03-06 11:23:48
4	Troy Warmboe	500	Kotlin	2020-02-08 00:54:39
5	Chris Johnson	548	Kotlin	2023-07-31 15:03:19
6	Emil Wihlander	650	Kotlin	2024-07-23 23:10:15
7	Roger Bongers	722	Kotlin	2021-06-27 16:25:52
8	Adam Koprowski	769	Kotlin	2020-11-14 18:21:57
9	Johnny Baloney	795	Kotlin	2022-02-15 12:13:30
10	Xevion	1151	Kotlin	2022-02-12 19:13:59

#	User	Length	Language	Date
1	Shehab Ahmed Hatem	673	Lua	2023-12-04 17:38:34
2	Greg Gorlen	712	Lua	2024-02-01 08:30:07

#	User	Length	Language	Date
1	Sebastian Banert	1086	OCaml	2024-08-30 14:57:52

#	User	Length	Language	Date
1	Hidden user	634	Odin	2025-05-24 23:00:23

#	User	Length	Language	Date
1	Hidden user	588	Pascal	2020-04-21 04:23:54
2	Ingemar Ragnemalm	907	Pascal	2018-03-20 20:33:44
3	David Connolly	1291	Pascal	2021-11-29 17:38:43

#	User	Length	Language	Date
1	Björn Åhlander	1355	PHP	2015-03-20 23:57:51

#	User	Length	Language	Date
1	Hakan Kjellerstrand	335	Prolog	2023-03-05 19:15:36
2	Hadi Qovaizi	3710	Prolog	2018-07-02 01:21:35

#	User	Length	Language	Date
1	Thomas Feld	151	Python 2	2019-09-16 16:30:33
2	Erik Odenman	196	Python 2	2015-05-15 01:01:04
3	Conor McCauley	196	Python 2	2019-10-28 06:51:20
4	Johan Lyts	199	Python 2	2020-02-10 14:08:52
5	Hidden user	223	Python 2	2015-03-12 12:03:28
6	Jonas Kylling	258	Python 2	2015-01-20 21:57:27
7	钟佳雯	273	Python 2	2017-10-01 21:12:59
8	Binghong Yu	284	Python 2	2017-09-29 12:11:29
9	Jesper Öqvist	304	Python 2	2018-10-27 22:25:09
10	Asger Hautop Drewsen	307	Python 2	2016-01-27 22:29:14

#	User	Length	Language	Date
1	Thibault Raffaillac	122	Python 3	2024-07-27 15:03:27
2	David Worley	132	Python 3	2025-10-23 17:32:07
3	Benjamin Z White	159	Python 3	2023-04-06 17:37:36
4	Joel Niemelä	159	Python 3	2025-08-24 08:10:31
5	Ben Pendley	159	Python 3	2025-10-14 23:07:34
6	Yong Mao	162	Python 3	2023-04-12 18:49:43
7	Naser Ogrešević	174	Python 3	2025-11-02 18:43:14
8	Clement Oh	179	Python 3	2023-10-21 07:42:00
9	Shashank Bhatt	187	Python 3	2024-06-12 21:47:03
10	Tai Tze Kin	188	Python 3	2023-11-29 04:45:02

#	User	Length	Language	Date
1	Thomas Feld	83	Ruby	2023-03-31 09:28:48
2	Eugen Neagoe	335	Ruby	2026-03-19 00:02:10
3	Matzuka	587	Ruby	2025-11-07 17:35:28

#	User	Length	Language	Date
1	Pankajkumar Patro	470	Rust	2024-11-03 17:37:27
2	Vincent Lagerros	504	Rust	2025-02-23 01:31:22
3	Emil Dichmann	789	Rust	2025-10-04 14:20:13
4	Freek van Keulen	887	Rust	2023-10-13 17:44:59
5	Bas Dirks	929	Rust	2022-01-07 17:47:41
6	Hidden user	1636	Rust	2023-06-03 06:31:41
7	Isak Jägberg	1721	Rust	2019-05-05 20:05:49
8	Joe Blower	1789	Rust	2025-11-10 18:15:42
9	Pahlevi Fikri Auliya	2267	Rust	2020-11-19 00:09:51
10	Egor Kulikov	24620	Rust	2025-10-14 14:01:54

Solution running time distribution