Problem A
Unlock Pattern — Problem Statistics

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Submissions	3477
Accepted submissions	2143
Submission ratio	61.63%
Authors	2065
Full solves [?]	1943
Full solve Ratio	94.09%

#	User	Runtime	Language	Date
1	Atiq Rahman	0.02 s	C#	2017-10-16 01:15:20
2	Faisal Rahman	0.02 s	C#	2017-11-14 05:56:29
3	Liam Percy	0.02 s	C#	2018-07-20 06:15:12
4	Soledad Fernández	0.02 s	C#	2018-08-02 22:44:16
5	Ryo Kochi	0.02 s	C#	2018-12-30 14:56:55
6	Robbe Decraemer	0.02 s	C#	2019-09-05 11:52:08
7	Thomas Norris	0.02 s	C#	2019-09-24 16:16:42
8	Linus Hauck	0.02 s	C#	2019-10-29 07:40:07
9	Michael Palkovics	0.02 s	C#	2019-11-15 14:06:56
10	Sebastian Gielinger	0.02 s	C#	2019-12-06 08:33:54

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	Common Lisp	2019-07-18 23:29:05
2	David Cawthon	0.02 s	Common Lisp	2019-05-10 03:05:35

#	User	Runtime	Language	Date
1	Henry Wang	0.02 s	Go	2020-01-14 05:38:58
2	DIONISIO OLIVARES ASTUDILLO	0.02 s	Go	2022-06-27 06:49:09
3	Harrison Shen	0.02 s	Go	2023-03-30 09:10:02
4	Yitian Wang	0.02 s	Go	2023-04-04 00:14:30
5	Krzysztof Gibuła	0.07 s	Go	2019-01-11 22:35:01
6	dick move	0.07 s	Go	2021-06-09 18:51:56
7	Albert Rise Nielsen	0.07 s	Go	2021-08-31 16:37:04
8	E N Martin	0.08 s	Go	2019-07-30 17:17:01
9	Norbert Voelker	0.08 s	Go	2021-04-21 18:12:17
10	Hidden user	0.08 s	Go	2021-12-18 14:57:53

#	User	Runtime	Language	Date
1	Brent Yorgey	0.00 s	Haskell	2017-10-13 23:53:28
2	Matthew Johnson	0.00 s	Haskell	2018-03-08 22:58:48
3	pancrates	0.00 s	Haskell	2018-03-28 11:17:43
4	Håkon Flatval	0.00 s	Haskell	2018-09-02 18:10:24
5	Asbjørn Olav Orvedal	0.00 s	Haskell	2022-11-15 21:09:36
6	Ole Anders Nødland	0.00 s	Haskell	2022-11-21 12:55:35
7	Hidden user	0.00 s	Haskell	2022-11-22 02:35:56
8	Daniel Cabral	0.00 s	Haskell	2022-11-23 09:15:26
9	Steinar Simonnes	0.00 s	Haskell	2024-01-24 10:27:37
10	Sebastian Banert	0.00 s	Haskell	2024-06-16 13:07:27

#	User	Runtime	Language	Date
1	Taras Romanyuk	0.04 s	Java	2024-11-19 00:21:40
2	Anders Månsson	0.04 s	Java	2025-12-04 15:09:43
3	Emma Holmberg Ohlsson	0.04 s	Java	2025-12-04 15:13:13
4	Emelie Bondesson	0.04 s	Java	2025-12-04 15:36:40
5	Valdemar Roxling	0.04 s	Java	2025-12-04 15:53:11
6	Lukas Gustavsson	0.04 s	Java	2025-12-04 15:55:32
7	Nick Wu	0.05 s	Java	2017-10-13 23:01:21
8	Aldo Chow	0.05 s	Java	2017-10-13 23:05:42
9	Finn Lidbetter	0.05 s	Java	2017-10-13 23:06:27
10	Nathaniel Lahn	0.05 s	Java	2017-10-13 23:06:28

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	JavaScript (Node.js)	2024-09-18 21:44:33
2	Camilo Aparecido Ferri Moreira	0.05 s	JavaScript (Node.js)	2018-09-01 23:12:47
3	Gurpartap Singh Bhatti	0.05 s	JavaScript (Node.js)	2019-03-08 08:23:12
4	Hidden user	0.40 s	JavaScript (Node.js)	2019-07-09 08:39:36
5	Chris Wong	0.41 s	JavaScript (Node.js)	2021-02-15 17:41:06
6	Andoko Chandra	0.42 s	JavaScript (Node.js)	2020-10-08 22:09:19
7	Howard Tin Chi Chan	0.42 s	JavaScript (Node.js)	2021-02-18 23:13:37
8	John	0.42 s	JavaScript (Node.js)	2021-03-10 10:51:40

#	User	Runtime	Language	Date
1	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2017-10-14 00:30:21
2	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2017-10-16 03:19:54
3	Peter Menyes	0.02 s	JavaScript (SpiderMonkey)	2021-08-10 15:12:33
4	Alexander Vestin	0.02 s	JavaScript (SpiderMonkey)	2022-10-16 13:36:20
5	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2022-11-16 08:36:00
6	Evan Magill	0.02 s	JavaScript (SpiderMonkey)	2024-04-22 22:09:45
7	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2024-06-16 21:49:40
8	Andrea Bianchessi	0.03 s	JavaScript (SpiderMonkey)	2019-10-02 16:22:20
9	Nicklas Utgaard	0.03 s	JavaScript (SpiderMonkey)	2021-12-23 12:35:07

#	User	Runtime	Language	Date
1	Timothy Gaede	0.59 s	Julia	2024-03-26 05:49:07
2	Hidden user	0.63 s	Julia	2023-04-29 01:34:04

#	User	Runtime	Language	Date
1	Jacob Huebner	0.12 s	Kotlin	2020-04-27 03:57:04
2	Neil Harmon	0.19 s	Kotlin	2019-04-19 12:36:19
3	Dayan Ruben Gonzalez	0.19 s	Kotlin	2020-10-11 02:33:56
4	Sebastian Sternberg	0.19 s	Kotlin	2021-08-20 09:57:13
5	Adam Rankin	0.19 s	Kotlin	2023-05-08 06:26:19
6	axl	0.22 s	Kotlin	2019-08-06 15:25:25
7	Rasmus Ros	0.24 s	Kotlin	2019-12-27 23:25:50
8	Amund Myrbostad	0.24 s	Kotlin	2024-01-31 09:43:38
9	Troy Warmboe	0.25 s	Kotlin	2020-02-07 01:00:58
10	Stephen Atwood	0.28 s	Kotlin	2024-08-30 01:06:20

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2017-10-16 15:37:02
2	David Connolly	0.00 s	Pascal	2021-11-23 15:11:23

#	User	Runtime	Language	Date
1	Renate	0.01 s	PHP	2021-07-25 21:28:54
2	Andre Wahyudi	0.01 s	PHP	2022-11-16 04:02:05

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.01 s	Prolog	2017-12-18 21:24:48
2	Hakan Kjellerstrand	0.02 s	Prolog	2023-02-05 18:46:17

#	User	Runtime	Language	Date
1	Alex Zhao	0.02 s	Python 2	2017-10-13 23:03:57
2	Godmar Back	0.02 s	Python 2	2017-10-13 23:04:58
3	Ethan Arnold	0.02 s	Python 2	2017-10-13 23:05:02
4	Jeff Robertson	0.02 s	Python 2	2017-10-13 23:07:02
5	Christofer Ohlsson	0.02 s	Python 2	2017-10-14 13:00:25
6	Çağdaş Öztekin	0.02 s	Python 2	2017-10-14 15:03:00
7	Maksym Bendeberia	0.02 s	Python 2	2017-12-18 15:17:19
8	William Gan	0.02 s	Python 2	2017-12-27 11:42:38
9	Sigurður Jens Albertsson	0.02 s	Python 2	2018-01-15 15:06:31
10	Miorel Palii	0.02 s	Python 2	2018-02-27 03:35:41

#	User	Runtime	Language	Date
1	Arnav Sastry	0.02 s	Python 3	2017-10-13 23:04:36
2	Kasper Borys	0.02 s	Python 3	2017-10-13 23:07:39
3	Allen Kim	0.02 s	Python 3	2017-10-13 23:07:56
4	Tim Salmon	0.02 s	Python 3	2017-10-13 23:09:28
5	John Barczynski	0.02 s	Python 3	2017-10-13 23:15:39
6	Shawn Mathew	0.02 s	Python 3	2017-10-13 23:21:31
7	Rohith Reddy	0.02 s	Python 3	2017-10-14 00:24:04
8	Ciara Godwin	0.02 s	Python 3	2017-10-14 22:25:36
9	David Mitchell	0.02 s	Python 3	2017-10-15 10:27:48
10	Anthony Clark	0.02 s	Python 3	2017-10-16 06:18:02

#	User	Runtime	Language	Date
1	Macdara mac an tSionnaigh	0.04 s	Ruby	2019-09-15 21:34:09
2	Troy Sornson	0.05 s	Ruby	2022-01-27 01:04:40
3	Alexander Bilde Pedersen	0.05 s	Ruby	2023-05-23 17:05:27
4	Thomas Feld	0.06 s	Ruby	2022-11-10 12:49:41

#	User	Length	Language	Date
1	Martin Blom	233	C	2024-01-02 20:03:26
2	Ximun Castoreo	375	C	2022-04-14 09:36:27
3	Matthew Weston	377	C	2022-01-08 21:39:15
4	Magnus Wass	425	C	2020-12-22 18:28:58
5	Allan Nouri	438	C	2024-03-19 09:47:27
6	紅茶	469	C	2023-03-28 17:29:07
7	PhilCampbell	498	C	2021-01-05 16:41:33
8	Emil Wihlander	536	C	2020-12-05 07:38:04
9	Khang Trần	569	C	2019-07-30 04:59:37
10	Mael MENOU	576	C	2022-01-05 23:09:16

#	User	Length	Language	Date
1	Anthony Ye	635	C#	2022-12-04 19:37:15
2	Esty Crow	662	C#	2022-11-28 13:09:47
3	Göran Andersson	730	C#	2022-05-12 22:45:58
4	Frian Tampake	789	C#	2023-03-24 04:55:23
5	Hidden user	901	C#	2022-07-15 13:25:20
6	Michael Palkovics	910	C#	2019-11-15 14:06:56
7	Eric Weiss	950	C#	2022-05-31 23:09:58
8	Ahmet Murat Gençay	996	C#	2023-09-07 16:46:22
9	Thomas Norris	1016	C#	2019-09-24 16:16:42
10	Dang Tran Tuan Trung	1134	C#	2021-08-14 14:20:34

#	User	Length	Language	Date
1	Đậu Huy Minh	327	C++	2022-10-17 18:09:20
2	Chris Ardiansyah	350	C++	2020-03-18 07:48:15
3	Yeung Man Tsung	360	C++	2022-11-20 07:18:52
4	Alireza Kaboli	365	C++	2022-07-14 20:47:58
5	高宇	366	C++	2017-10-14 00:06:55
6	Sichao Yang	368	C++	2017-10-13 23:09:50
7	Rafael Kristoforus Yanto	373	C++	2025-04-14 03:12:24
8	Tyler Fernando	383	C++	2022-10-15 09:37:19
9	Grae Yeandle	385	C++	2018-03-17 14:35:23
10	Mohsen Dehbashi	385	C++	2020-09-12 05:23:45

#	User	Length	Language	Date
1	Hidden user	466	Common Lisp	2019-07-18 23:29:05
2	David Cawthon	642	Common Lisp	2019-05-10 03:05:35

#	User	Length	Language	Date
1	dick move	415	Go	2021-06-09 18:51:56
2	Krzysztof Gibuła	556	Go	2019-01-11 22:35:01
3	Hidden user	661	Go	2021-12-18 14:57:53
4	Henry Wang	691	Go	2020-01-14 05:38:58
5	Norbert Voelker	766	Go	2021-04-21 18:12:17
6	DIONISIO OLIVARES ASTUDILLO	810	Go	2022-06-27 06:49:09
7	Albert Rise Nielsen	943	Go	2021-08-31 16:37:04
8	E N Martin	1007	Go	2019-07-30 17:17:01
9	Harrison Shen	1050	Go	2023-03-30 09:10:02
10	Yitian Wang	1142	Go	2023-04-04 00:14:30

#	User	Length	Language	Date
1	Sebastian Banert	305	Haskell	2024-06-16 13:07:27
2	Håkon Flatval	346	Haskell	2018-09-02 18:10:24
3	Steinar Simonnes	373	Haskell	2024-01-24 10:27:37
4	Tim Put	455	Haskell	2020-01-21 01:25:59
5	Anders B. Clausen	461	Haskell	2021-09-22 23:51:14
6	Hidden user	482	Haskell	2019-08-14 11:23:41
7	Jan Hrček	504	Haskell	2020-10-27 12:49:22
8	Hidden user	567	Haskell	2019-12-14 00:52:18
9	Daniel Cabral	585	Haskell	2022-11-23 09:25:58
10	Aurélien Pepin	589	Haskell	2019-08-16 15:46:30

#	User	Length	Language	Date
1	Alex Coleman	427	Java	2018-10-17 06:02:31
2	Carter Henderson	497	Java	2021-11-01 16:58:33
3	Merten Bohn	499	Java	2022-11-07 19:57:38
4	Caeden Whitaker	504	Java	2020-07-08 02:59:36
5	Olesia Elfimova	522	Java	2017-10-13 23:08:50
6	Amon Al-khatib	526	Java	2017-10-13 23:03:36
7	Doug Goodman	529	Java	2018-06-08 23:14:19
8	Kevin Kauffman	530	Java	2021-12-29 00:25:15
9	Timothy Moegling	542	Java	2019-12-19 21:44:43
10	William Wendt	565	Java	2018-06-09 17:31:29

#	User	Length	Language	Date
1	Chris Wong	790	JavaScript (Node.js)	2021-02-15 17:41:06
2	Gurpartap Singh Bhatti	851	JavaScript (Node.js)	2019-03-08 08:23:12
3	Hidden user	908	JavaScript (Node.js)	2023-08-23 02:04:12
4	Camilo Aparecido Ferri Moreira	1044	JavaScript (Node.js)	2018-09-01 23:12:47
5	Hidden user	1051	JavaScript (Node.js)	2019-07-09 08:39:36
6	John	1266	JavaScript (Node.js)	2021-03-10 10:51:40
7	Andoko Chandra	1288	JavaScript (Node.js)	2020-10-08 22:09:19
8	Howard Tin Chi Chan	1386	JavaScript (Node.js)	2021-02-18 23:13:37

#	User	Length	Language	Date
1	Jimmy Gustafsson	296	JavaScript (SpiderMonkey)	2024-06-16 21:49:40
2	Peter Kedemo	389	JavaScript (SpiderMonkey)	2017-10-14 00:30:21
3	Evan Magill	420	JavaScript (SpiderMonkey)	2024-04-22 22:09:45
4	Andrea Bianchessi	482	JavaScript (SpiderMonkey)	2019-10-02 16:22:20
5	Peter Menyes	571	JavaScript (SpiderMonkey)	2021-08-10 15:12:33
6	Alexander Vestin	621	JavaScript (SpiderMonkey)	2022-10-16 13:36:20
7	Christian Pilegaard Cederquist	650	JavaScript (SpiderMonkey)	2022-11-16 08:36:00
8	Bjørn Chr. Soltvedt	656	JavaScript (SpiderMonkey)	2017-10-16 03:19:54
9	Nicklas Utgaard	897	JavaScript (SpiderMonkey)	2021-12-23 12:35:07

#	User	Length	Language	Date
1	Hidden user	397	Julia	2023-04-29 01:34:04
2	Timothy Gaede	904	Julia	2024-03-26 05:49:07

#	User	Length	Language	Date
1	Stephen Atwood	363	Kotlin	2024-08-30 01:06:20
2	Rasmus Ros	534	Kotlin	2019-12-27 23:25:50
3	Sebastian Sternberg	591	Kotlin	2021-08-20 10:16:13
4	axl	739	Kotlin	2019-08-06 15:25:25
5	Dayan Ruben Gonzalez	856	Kotlin	2020-10-11 02:33:56
6	Neil Harmon	1039	Kotlin	2019-04-19 12:36:19
7	Troy Warmboe	1101	Kotlin	2020-02-07 01:00:58
8	Amund Myrbostad	1206	Kotlin	2024-01-31 09:44:06
9	Adam Rankin	1316	Kotlin	2023-05-08 06:26:19
10	Jacob Huebner	1362	Kotlin	2020-04-27 03:57:04

#	User	Length	Language	Date
1	Ingemar Ragnemalm	533	Pascal	2017-10-16 15:37:02
2	David Connolly	1019	Pascal	2021-11-23 15:11:23

#	User	Length	Language	Date
1	Renate	962	PHP	2021-07-25 21:28:54
2	Andre Wahyudi	1197	PHP	2022-11-16 04:02:05

#	User	Length	Language	Date
1	Hakan Kjellerstrand	347	Prolog	2023-02-05 18:46:17
2	Andriy Zyevakov	1674	Prolog	2017-12-18 21:24:48

#	User	Length	Language	Date
1	Thomas Feld	178	Python 2	2019-08-30 08:45:34
2	William Gan	213	Python 2	2017-12-27 11:42:38
3	Andreas Björklund	239	Python 2	2020-02-26 18:30:37
4	Lars Åström	244	Python 2	2018-10-07 10:17:19
5	Akif Patel	245	Python 2	2018-10-28 06:04:28
6	Simon Vestin	256	Python 2	2019-01-26 07:22:19
7	Hidden user	284	Python 2	2018-08-04 21:06:43
8	Johan Lyts	289	Python 2	2019-06-17 22:05:37
9	Alex Zhao	295	Python 2	2017-10-13 23:03:57
10	Samuel Perkin	302	Python 2	2018-03-24 13:28:48

#	User	Length	Language	Date
1	Adam Levav	128	Python 3	2023-01-24 23:31:21
2	Lasse Letager Hansen	139	Python 3	2024-01-09 18:34:45
3	Shashank Bhatt	146	Python 3	2024-06-18 06:03:54
4	Morten Clausen	149	Python 3	2022-10-24 22:42:06
5	Ahmed Chamseddine	155	Python 3	2024-07-05 12:59:03
6	Charles Ancheta	172	Python 3	2023-03-28 08:48:04
7	Tai Tze Kin	180	Python 3	2024-05-01 21:49:02
8	Henrik Olsen Eide	192	Python 3	2023-09-15 10:15:36
9	Clement Oh	192	Python 3	2023-09-24 15:04:47
10	Vedran Čačić	202	Python 3	2019-01-22 21:04:17

#	User	Length	Language	Date
1	Thomas Feld	85	Ruby	2022-11-10 12:49:41
2	Alexander Bilde Pedersen	113	Ruby	2023-05-23 17:05:27
3	Troy Sornson	418	Ruby	2022-01-27 01:04:40
4	Macdara mac an tSionnaigh	849	Ruby	2019-09-15 21:34:09

#	User	Length	Language	Date
1	Vincent Lagerros	544	Rust	2025-03-04 23:05:59
2	Artur Khuziakhmetov	628	Rust	2022-07-17 14:13:21
3	Pankajkumar Patro	700	Rust	2025-05-05 15:32:05
4	Kok Dith	702	Rust	2021-08-04 07:52:56
5	David Zacek	729	Rust	2021-05-21 03:07:09
6	Shivam Thakur	767	Rust	2019-06-26 17:43:05
7	Bas Dirks	775	Rust	2021-12-31 19:43:03
8	Alex G	814	Rust	2020-02-26 22:34:17
9	Oskar Strömberg	966	Rust	2020-10-23 22:58:01
10	Isak Jägberg	1026	Rust	2019-08-24 11:16:48

Solution running time distribution