Problem J
Unlock Pattern — Problem Statistics

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Submissions	3480
Accepted submissions	2146
Submission ratio	61.67%
Authors	2068
Full solves [?]	1946
Full solve Ratio	94.10%

#	User	Runtime	Language	Date
1	Atiq Rahman	0.02 s	C#	2017-10-15 23:15:20
2	Faisal Rahman	0.02 s	C#	2017-11-14 04:56:29
3	Liam Percy	0.02 s	C#	2018-07-20 04:15:12
4	Soledad Fernández	0.02 s	C#	2018-08-02 20:44:16
5	Ryo Kochi	0.02 s	C#	2018-12-30 13:56:55
6	Robbe Decraemer	0.02 s	C#	2019-09-05 09:52:08
7	Thomas Norris	0.02 s	C#	2019-09-24 14:16:42
8	Linus Hauck	0.02 s	C#	2019-10-29 06:40:07
9	Michael Palkovics	0.02 s	C#	2019-11-15 13:06:56
10	Sebastian Gielinger	0.02 s	C#	2019-12-06 07:33:54

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	Common Lisp	2019-07-18 21:29:05
2	David Cawthon	0.02 s	Common Lisp	2019-05-10 01:05:35

#	User	Runtime	Language	Date
1	Henry Wang	0.02 s	Go	2020-01-14 04:38:58
2	DIONISIO OLIVARES ASTUDILLO	0.02 s	Go	2022-06-27 04:49:09
3	Harrison Shen	0.02 s	Go	2023-03-30 07:10:02
4	Yitian Wang	0.02 s	Go	2023-04-03 22:14:30
5	Krzysztof Gibuła	0.07 s	Go	2019-01-11 21:35:01
6	dick move	0.07 s	Go	2021-06-09 16:51:56
7	Albert Rise Nielsen	0.07 s	Go	2021-08-31 14:37:04
8	E N Martin	0.08 s	Go	2019-07-30 15:17:01
9	Norbert Voelker	0.08 s	Go	2021-04-21 16:12:17
10	Hidden user	0.08 s	Go	2021-12-18 13:57:53

#	User	Runtime	Language	Date
1	Brent Yorgey	0.00 s	Haskell	2017-10-13 21:53:28
2	Matthew A Johnson	0.00 s	Haskell	2018-03-08 21:58:48
3	pancrates	0.00 s	Haskell	2018-03-28 09:17:43
4	Håkon Flatval	0.00 s	Haskell	2018-09-02 16:10:24
5	Asbjørn Olav Orvedal	0.00 s	Haskell	2022-11-15 20:09:36
6	Ole Anders Nødland	0.00 s	Haskell	2022-11-21 11:55:35
7	Hidden user	0.00 s	Haskell	2022-11-22 01:35:56
8	Daniel Cabral	0.00 s	Haskell	2022-11-23 08:15:26
9	Steinar Simonnes	0.00 s	Haskell	2024-01-24 09:27:37
10	Sebastian Banert	0.00 s	Haskell	2024-06-16 11:07:27

#	User	Runtime	Language	Date
1	Taras Romanyuk	0.04 s	Java	2024-11-18 23:21:40
2	Anders Månsson	0.04 s	Java	2025-12-04 14:09:43
3	Emma Holmberg Ohlsson	0.04 s	Java	2025-12-04 14:13:13
4	Emelie Bondesson	0.04 s	Java	2025-12-04 14:36:40
5	Valdemar Roxling	0.04 s	Java	2025-12-04 14:53:11
6	Lukas Gustavsson	0.04 s	Java	2025-12-04 14:55:32
7	Nick Wu	0.05 s	Java	2017-10-13 21:01:21
8	Aldo Chow	0.05 s	Java	2017-10-13 21:05:42
9	Finn Lidbetter	0.05 s	Java	2017-10-13 21:06:27
10	Nathaniel Lahn	0.05 s	Java	2017-10-13 21:06:28

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	JavaScript (Node.js)	2024-09-18 19:44:33
2	Camilo Aparecido Ferri Moreira	0.05 s	JavaScript (Node.js)	2018-09-01 21:12:47
3	Gurpartap Singh Bhatti	0.05 s	JavaScript (Node.js)	2019-03-08 07:23:12
4	Hidden user	0.40 s	JavaScript (Node.js)	2019-07-09 06:39:36
5	Chris Wong	0.41 s	JavaScript (Node.js)	2021-02-15 16:41:06
6	Andoko Chandra	0.42 s	JavaScript (Node.js)	2020-10-08 20:09:19
7	Howard Tin Chi Chan	0.42 s	JavaScript (Node.js)	2021-02-18 22:13:37
8	John	0.42 s	JavaScript (Node.js)	2021-03-10 09:51:40

#	User	Runtime	Language	Date
1	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2017-10-13 22:30:21
2	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2017-10-16 01:19:54
3	Peter Menyes	0.02 s	JavaScript (SpiderMonkey)	2021-08-10 13:12:33
4	Alexander Vestin	0.02 s	JavaScript (SpiderMonkey)	2022-10-16 11:36:20
5	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2022-11-16 07:36:00
6	Evan Magill	0.02 s	JavaScript (SpiderMonkey)	2024-04-22 20:09:45
7	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2024-06-16 19:49:40
8	Andrea Bianchessi	0.03 s	JavaScript (SpiderMonkey)	2019-10-02 14:22:20
9	Nicklas Utgaard	0.03 s	JavaScript (SpiderMonkey)	2021-12-23 11:35:07

#	User	Runtime	Language	Date
1	Timothy Gaede	0.59 s	Julia	2024-03-26 04:49:07
2	Hidden user	0.63 s	Julia	2023-04-28 23:34:04

#	User	Runtime	Language	Date
1	Jacob Huebner	0.12 s	Kotlin	2020-04-27 01:57:04
2	Neil Harmon	0.19 s	Kotlin	2019-04-19 10:36:19
3	Dayan Ruben Gonzalez	0.19 s	Kotlin	2020-10-11 00:33:56
4	Sebastian Sternberg	0.19 s	Kotlin	2021-08-20 07:57:13
5	Adam Rankin	0.19 s	Kotlin	2023-05-08 04:26:19
6	axl	0.22 s	Kotlin	2019-08-06 13:25:25
7	Rasmus Ros	0.24 s	Kotlin	2019-12-27 22:25:50
8	Amund Myrbostad	0.24 s	Kotlin	2024-01-31 08:43:38
9	Troy Warmboe	0.25 s	Kotlin	2020-02-07 00:00:58
10	Stephen Atwood	0.28 s	Kotlin	2024-08-29 23:06:20

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2017-10-16 13:37:02
2	David Connolly	0.00 s	Pascal	2021-11-23 14:11:23

#	User	Runtime	Language	Date
1	Renate Fiala-Lundström	0.01 s	PHP	2021-07-25 19:28:54
2	Andre Wahyudi	0.01 s	PHP	2022-11-16 03:02:05

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.01 s	Prolog	2017-12-18 20:24:48
2	Hakan Kjellerstrand	0.02 s	Prolog	2023-02-05 17:46:17

#	User	Runtime	Language	Date
1	Alex Zhao	0.02 s	Python 2	2017-10-13 21:03:57
2	Godmar Back	0.02 s	Python 2	2017-10-13 21:04:58
3	Ethan Arnold	0.02 s	Python 2	2017-10-13 21:05:02
4	Jeff Robertson	0.02 s	Python 2	2017-10-13 21:07:02
5	Christofer Ohlsson	0.02 s	Python 2	2017-10-14 11:00:25
6	Çağdaş Öztekin	0.02 s	Python 2	2017-10-14 13:03:00
7	Maksym Bendeberia	0.02 s	Python 2	2017-12-18 14:17:19
8	William Gan	0.02 s	Python 2	2017-12-27 10:42:38
9	Sigurður Jens Albertsson	0.02 s	Python 2	2018-01-15 14:06:31
10	Miorel Palii	0.02 s	Python 2	2018-02-27 02:35:41

#	User	Runtime	Language	Date
1	Arnav Sastry	0.02 s	Python 3	2017-10-13 21:04:36
2	Kasper Borys	0.02 s	Python 3	2017-10-13 21:07:39
3	Allen Kim	0.02 s	Python 3	2017-10-13 21:07:56
4	Tim Salmon	0.02 s	Python 3	2017-10-13 21:09:28
5	John Barczynski	0.02 s	Python 3	2017-10-13 21:15:39
6	Shawn Mathew	0.02 s	Python 3	2017-10-13 21:21:31
7	Rohith Reddy	0.02 s	Python 3	2017-10-13 22:24:04
8	Ciara Godwin	0.02 s	Python 3	2017-10-14 20:25:36
9	David Mitchell	0.02 s	Python 3	2017-10-15 08:27:48
10	Anthony Clark	0.02 s	Python 3	2017-10-16 04:18:02

#	User	Runtime	Language	Date
1	Macdara mac an tSionnaigh	0.04 s	Ruby	2019-09-15 19:34:09
2	Troy Sornson	0.05 s	Ruby	2022-01-27 00:04:40
3	Alexander Bilde Pedersen	0.05 s	Ruby	2023-05-23 15:05:27
4	Thomas Feld	0.06 s	Ruby	2022-11-10 11:49:41

#	User	Length	Language	Date
1	Martin Blom	233	C	2024-01-02 19:03:26
2	Ximun Castoreo	375	C	2022-04-14 07:36:27
3	Matthew Weston	377	C	2022-01-08 20:39:15
4	Magnus Wass	425	C	2020-12-22 17:28:58
5	Allan Nouri	438	C	2024-03-19 08:47:27
6	紅茶	469	C	2023-03-28 15:29:07
7	PhilCampbell	498	C	2021-01-05 15:41:33
8	Emil Wihlander	536	C	2020-12-05 06:38:04
9	Khang Trần	569	C	2019-07-30 02:59:37
10	Mael MENOU	576	C	2022-01-05 22:09:16

#	User	Length	Language	Date
1	Anthony Ye	635	C#	2022-12-04 18:37:15
2	Esty Crow	662	C#	2022-11-28 12:09:47
3	Göran Andersson	730	C#	2022-05-12 20:45:58
4	Frian Tampake	789	C#	2023-03-24 03:55:23
5	Hidden user	901	C#	2022-07-15 11:25:20
6	Michael Palkovics	910	C#	2019-11-15 13:06:56
7	Eric Weiss	950	C#	2022-05-31 21:09:58
8	Ahmet Murat Gençay	996	C#	2023-09-07 14:46:22
9	Thomas Norris	1016	C#	2019-09-24 14:16:42
10	Dang Tran Tuan Trung	1134	C#	2021-08-14 12:20:34

#	User	Length	Language	Date
1	Đậu Huy Minh	327	C++	2022-10-17 16:09:20
2	Chris Ardiansyah	350	C++	2020-03-18 06:48:15
3	Yeung Man Tsung	360	C++	2022-11-20 06:18:52
4	Alireza Kaboli	365	C++	2022-07-14 18:47:58
5	高宇	366	C++	2017-10-13 22:06:55
6	Sichao Yang	368	C++	2017-10-13 21:09:50
7	Rafael Kristoforus Yanto	373	C++	2025-04-14 01:12:24
8	Tyler Fernando	383	C++	2022-10-15 07:37:19
9	Grae Yeandle	385	C++	2018-03-17 13:35:23
10	Mohsen Dehbashi	385	C++	2020-09-12 03:23:45

#	User	Length	Language	Date
1	Hidden user	466	Common Lisp	2019-07-18 21:29:05
2	David Cawthon	642	Common Lisp	2019-05-10 01:05:35

#	User	Length	Language	Date
1	dick move	415	Go	2021-06-09 16:51:56
2	Krzysztof Gibuła	556	Go	2019-01-11 21:35:01
3	Hidden user	661	Go	2021-12-18 13:57:53
4	Henry Wang	691	Go	2020-01-14 04:38:58
5	Norbert Voelker	766	Go	2021-04-21 16:12:17
6	DIONISIO OLIVARES ASTUDILLO	810	Go	2022-06-27 04:49:09
7	Albert Rise Nielsen	943	Go	2021-08-31 14:37:04
8	E N Martin	1007	Go	2019-07-30 15:17:01
9	Harrison Shen	1050	Go	2023-03-30 07:10:02
10	Yitian Wang	1142	Go	2023-04-03 22:14:30

#	User	Length	Language	Date
1	Sebastian Banert	305	Haskell	2024-06-16 11:07:27
2	Håkon Flatval	346	Haskell	2018-09-02 16:10:24
3	Steinar Simonnes	373	Haskell	2024-01-24 09:27:37
4	Tim Put	455	Haskell	2020-01-21 00:25:59
5	Anders B. Clausen	461	Haskell	2021-09-22 21:51:14
6	Hidden user	482	Haskell	2019-08-14 09:23:41
7	Jan Hrček	504	Haskell	2020-10-27 11:49:22
8	Hidden user	567	Haskell	2019-12-13 23:52:18
9	Daniel Cabral	585	Haskell	2022-11-23 08:25:58
10	Aurélien Pepin	589	Haskell	2019-08-16 13:46:30

#	User	Length	Language	Date
1	Alex Coleman	427	Java	2018-10-17 04:02:31
2	Carter Henderson	497	Java	2021-11-01 15:58:33
3	Merten Bohn	499	Java	2022-11-07 18:57:38
4	Caeden Whitaker	504	Java	2020-07-08 00:59:36
5	Olesia Elfimova	522	Java	2017-10-13 21:08:50
6	Amon Al-khatib	526	Java	2017-10-13 21:03:36
7	Doug Goodman	529	Java	2018-06-08 21:14:19
8	Kevin Kauffman	530	Java	2021-12-28 23:25:15
9	Timothy Moegling	542	Java	2019-12-19 20:44:43
10	William Wendt	565	Java	2018-06-09 15:31:29

#	User	Length	Language	Date
1	Chris Wong	790	JavaScript (Node.js)	2021-02-15 16:41:06
2	Gurpartap Singh Bhatti	851	JavaScript (Node.js)	2019-03-08 07:23:12
3	Hidden user	908	JavaScript (Node.js)	2023-08-23 00:04:12
4	Camilo Aparecido Ferri Moreira	1044	JavaScript (Node.js)	2018-09-01 21:12:47
5	Hidden user	1051	JavaScript (Node.js)	2019-07-09 06:39:36
6	John	1266	JavaScript (Node.js)	2021-03-10 09:51:40
7	Andoko Chandra	1288	JavaScript (Node.js)	2020-10-08 20:09:19
8	Howard Tin Chi Chan	1386	JavaScript (Node.js)	2021-02-18 22:13:37

#	User	Length	Language	Date
1	Jimmy Gustafsson	296	JavaScript (SpiderMonkey)	2024-06-16 19:49:40
2	Peter Kedemo	389	JavaScript (SpiderMonkey)	2017-10-13 22:30:21
3	Evan Magill	420	JavaScript (SpiderMonkey)	2024-04-22 20:09:45
4	Andrea Bianchessi	482	JavaScript (SpiderMonkey)	2019-10-02 14:22:20
5	Peter Menyes	571	JavaScript (SpiderMonkey)	2021-08-10 13:12:33
6	Alexander Vestin	621	JavaScript (SpiderMonkey)	2022-10-16 11:36:20
7	Christian Pilegaard Cederquist	650	JavaScript (SpiderMonkey)	2022-11-16 07:36:00
8	Bjørn Chr. Soltvedt	656	JavaScript (SpiderMonkey)	2017-10-16 01:19:54
9	Nicklas Utgaard	897	JavaScript (SpiderMonkey)	2021-12-23 11:35:07

#	User	Length	Language	Date
1	Hidden user	397	Julia	2023-04-28 23:34:04
2	Timothy Gaede	904	Julia	2024-03-26 04:49:07

#	User	Length	Language	Date
1	Stephen Atwood	363	Kotlin	2024-08-29 23:06:20
2	Rasmus Ros	534	Kotlin	2019-12-27 22:25:50
3	Sebastian Sternberg	591	Kotlin	2021-08-20 08:16:13
4	axl	739	Kotlin	2019-08-06 13:25:25
5	Dayan Ruben Gonzalez	856	Kotlin	2020-10-11 00:33:56
6	Neil Harmon	1039	Kotlin	2019-04-19 10:36:19
7	Troy Warmboe	1101	Kotlin	2020-02-07 00:00:58
8	Amund Myrbostad	1206	Kotlin	2024-01-31 08:44:06
9	Adam Rankin	1316	Kotlin	2023-05-08 04:26:19
10	Jacob Huebner	1362	Kotlin	2020-04-27 01:57:04

#	User	Length	Language	Date
1	Ingemar Ragnemalm	533	Pascal	2017-10-16 13:37:02
2	David Connolly	1019	Pascal	2021-11-23 14:11:23

#	User	Length	Language	Date
1	Renate Fiala-Lundström	962	PHP	2021-07-25 19:28:54
2	Andre Wahyudi	1197	PHP	2022-11-16 03:02:05

#	User	Length	Language	Date
1	Hakan Kjellerstrand	347	Prolog	2023-02-05 17:46:17
2	Andriy Zyevakov	1674	Prolog	2017-12-18 20:24:48

#	User	Length	Language	Date
1	Thomas Feld	178	Python 2	2019-08-30 06:45:34
2	William Gan	213	Python 2	2017-12-27 10:42:38
3	Andreas Björklund	239	Python 2	2020-02-26 17:30:37
4	Lars Åström	244	Python 2	2018-10-07 08:17:19
5	Akif Patel	245	Python 2	2018-10-28 05:04:28
6	Simon Vestin	256	Python 2	2019-01-26 06:22:19
7	Hidden user	284	Python 2	2018-08-04 19:06:43
8	Johan Lyts	289	Python 2	2019-06-17 20:05:37
9	Alex Zhao	295	Python 2	2017-10-13 21:03:57
10	Samuel Perkin	302	Python 2	2018-03-24 12:28:48

#	User	Length	Language	Date
1	Adam Levav	128	Python 3	2023-01-24 22:31:21
2	Lasse Letager Hansen	139	Python 3	2024-01-09 17:34:45
3	Shashank Bhatt	146	Python 3	2024-06-18 04:03:54
4	Morten Clausen	149	Python 3	2022-10-24 20:42:06
5	Ahmed Chamseddine	155	Python 3	2024-07-05 10:59:03
6	Charles Ancheta	172	Python 3	2023-03-28 06:48:04
7	Tai Tze Kin	180	Python 3	2024-05-01 19:49:02
8	Henrik Olsen Eide	192	Python 3	2023-09-15 08:15:36
9	Clement Oh	192	Python 3	2023-09-24 13:04:47
10	Vedran Čačić	202	Python 3	2019-01-22 20:04:17

#	User	Length	Language	Date
1	Thomas Feld	85	Ruby	2022-11-10 11:49:41
2	Alexander Bilde Pedersen	113	Ruby	2023-05-23 15:05:27
3	Troy Sornson	418	Ruby	2022-01-27 00:04:40
4	Macdara mac an tSionnaigh	849	Ruby	2019-09-15 19:34:09

#	User	Length	Language	Date
1	Vincent Lagerros	544	Rust	2025-03-04 22:05:59
2	Artur Khuziakhmetov	628	Rust	2022-07-17 12:13:21
3	Pankajkumar Patro	700	Rust	2025-05-05 13:32:05
4	Kok Dith	702	Rust	2021-08-04 05:52:56
5	David Zacek	729	Rust	2021-05-21 01:07:09
6	Shivam Thakur	767	Rust	2019-06-26 15:43:05
7	Bas Dirks	775	Rust	2021-12-31 18:43:03
8	Alex G	814	Rust	2020-02-26 21:34:17
9	Oskar Strömberg	966	Rust	2020-10-23 20:58:01
10	Isak Jägberg	1026	Rust	2019-08-24 09:16:48

Solution running time distribution