Problem A
Conformity — Problem Statistics

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Submissions	15278
Accepted submissions	6933
Submission ratio	45.38%
Authors	5434
Full solves [?]	5146
Full solve Ratio	94.70%

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	C	2017-05-22 04:39:41
2	Bergur Snorrason	0.01 s	C	2019-01-29 10:15:24
3	PhilCampbell	0.01 s	C	2021-02-12 13:08:57
4	Matthew Weston	0.01 s	C	2022-03-04 13:48:51
5	Neilvan Thesman	0.01 s	C	2024-06-07 15:47:33
6	Florian ten Napel	0.01 s	C	2024-10-06 23:30:13
7	Mirel Cosulschi	0.01 s	C	2024-10-16 09:21:58
8	Ata Kırcadağ	0.01 s	C	2025-04-13 18:12:18
9	Marika Olsson	0.05 s	C	2024-10-11 10:52:29
10	Hidden user	0.05 s	C	2025-06-02 21:16:57

#	User	Runtime	Language	Date
1	Thomas Norris	0.05 s	C#	2020-11-16 19:45:00
2	David Parker	0.05 s	C#	2023-03-14 21:15:19
3	Steve Williams	0.05 s	C#	2023-11-07 04:10:35
4	Esty Crow	0.06 s	C#	2024-11-08 17:56:14
5	Steven	0.07 s	C#	2023-03-15 13:42:19
6	Connor Walker	0.07 s	C#	2023-03-15 19:29:28
7	Brandon Mord	0.07 s	C#	2023-10-28 00:14:03
8	Todd Cottrell	0.07 s	C#	2023-11-09 07:00:52
9	Cory Kalm	0.07 s	C#	2024-09-06 01:17:49
10	Deci Bel	0.07 s	C#	2024-10-06 11:44:20

#	User	Runtime	Language	Date
1	Grae Yeandle	0.00 s	C++	2017-05-21 20:53:34
2	Hidden user	0.00 s	C++	2017-05-22 03:56:43
3	Chen Shenghao	0.00 s	C++	2019-10-05 16:13:09
4	Jonathan Hallström	0.00 s	C++	2022-03-08 10:22:29
5	Zhang Jikun	0.00 s	C++	2022-07-14 10:34:35
6	Nils Gustafsson	0.01 s	C++	2017-05-18 17:21:02
7	Johan Sannemo	0.01 s	C++	2017-05-18 17:22:24
8	Fredrik Hernqvist	0.01 s	C++	2017-05-18 17:34:57
9	Karl Lundstig	0.01 s	C++	2017-05-18 17:40:36
10	Kristoffer Åhgren	0.01 s	C++	2017-05-18 17:45:51

#	User	Runtime	Language	Date
1	David Cawthon	0.06 s	Common Lisp	2020-07-01 04:19:44

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	Go	2023-11-04 08:24:05
2	Hidden user	0.01 s	Go	2023-11-04 08:24:44
3	Pandhu Hutomo Aditya	0.01 s	Go	2023-11-04 08:55:10
4	Hidden user	0.01 s	Go	2023-11-04 18:41:45
5	Michael Lapandio	0.01 s	Go	2023-11-05 16:12:27
6	Muhammad Abdis	0.01 s	Go	2023-11-07 09:36:45
7	Muhammad Ariefuddin Satria Dharma	0.01 s	Go	2023-11-08 14:17:41
8	Diaz Agfa	0.01 s	Go	2024-01-21 10:47:01
9	Luna Johnson	0.01 s	Go	2025-04-15 15:46:50
10	Firman Aulia Insani	0.02 s	Go	2023-11-05 15:57:53

#	User	Runtime	Language	Date
1	Joash Chin Synn Khee	0.02 s	Haskell	2019-08-07 09:23:33
2	Jan Hrček	0.03 s	Haskell	2020-11-12 08:26:44
3	Caleb Surovik	0.06 s	Haskell	2021-07-17 03:58:38
4	David Zacek	0.07 s	Haskell	2021-07-09 20:53:04
5	Sebastian Banert	0.07 s	Haskell	2023-04-13 19:24:26
6	Brent Yorgey	0.08 s	Haskell	2017-11-11 17:21:05
7	Qi Ji	0.09 s	Haskell	2018-07-27 16:14:52
8	Hidden user	0.11 s	Haskell	2023-01-12 14:23:00
9	Steinar Simonnes	0.12 s	Haskell	2024-01-31 14:49:40
10	Hidden user	0.13 s	Haskell	2019-10-04 13:28:08

#	User	Runtime	Language	Date
1	Guangyi Zhou	0.06 s	Java	2024-10-14 16:47:40
2	Clement Oh	0.07 s	Java	2022-07-28 23:03:09
3	Tian Xiao	0.08 s	Java	2021-03-05 05:35:39
4	Nicholas Russell Saerang	0.08 s	Java	2021-03-08 10:12:12
5	Sven Rönnbäck	0.08 s	Java	2022-03-05 15:48:34
6	Lee Heng Sheng	0.08 s	Java	2024-04-16 10:48:31
7	Hidden user	0.09 s	Java	2018-06-27 15:29:14
8	Soo Qi Xuan Ian	0.09 s	Java	2020-10-01 07:45:10
9	Ryan Chew	0.09 s	Java	2020-10-04 12:33:29
10	Isaac Tay Zhi Xian	0.09 s	Java	2023-10-06 16:29:45

#	User	Runtime	Language	Date
1	Erlend Raa Vågset	0.08 s	JavaScript (Node.js)	2025-10-09 15:35:00
2	Hidden user	0.09 s	JavaScript (Node.js)	2024-07-06 17:51:40
3	Sander Hellesø	0.10 s	JavaScript (Node.js)	2019-04-22 21:37:28
4	Chris Wong	0.46 s	JavaScript (Node.js)	2021-03-08 18:09:29
5	John	0.49 s	JavaScript (Node.js)	2021-03-08 21:38:45
6	Andoko Chandra	0.55 s	JavaScript (Node.js)	2020-10-12 14:00:25

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.04 s	JavaScript (SpiderMonkey)	2017-05-22 06:00:54
2	Paul Leung	0.04 s	JavaScript (SpiderMonkey)	2017-05-26 19:25:03
3	Peter Kedemo	0.04 s	JavaScript (SpiderMonkey)	2017-07-18 22:49:53
4	Jimmy Gustafsson	0.04 s	JavaScript (SpiderMonkey)	2024-06-17 22:39:09
5	Christian Pilegaard Cederquist	0.05 s	JavaScript (SpiderMonkey)	2023-01-13 21:10:57
6	Andrew Stoute	0.05 s	JavaScript (SpiderMonkey)	2023-11-08 14:34:27
7	Zach Tschetter	0.05 s	JavaScript (SpiderMonkey)	2025-04-03 21:54:27
8	Peter Menyes	0.06 s	JavaScript (SpiderMonkey)	2021-08-20 11:00:52

#	User	Runtime	Language	Date
1	Hidden user	0.42 s	Julia	2025-03-15 23:41:42
2	Danny Robinson	0.75 s	Julia	2023-09-26 05:25:58
3	Timothy Gaede	0.80 s	Julia	2024-05-31 06:54:21

#	User	Runtime	Language	Date
1	Johnny Baloney	0.29 s	Kotlin	2022-01-16 13:43:30
2	Troy Warmboe	0.39 s	Kotlin	2023-04-10 23:39:27
3	Adam Rankin	0.41 s	Kotlin	2023-05-08 06:12:38
4	Jahid Hasan Imon	0.51 s	Kotlin	2020-06-03 22:30:42
5	Hidden user	0.57 s	Kotlin	2017-11-12 01:11:09
6	Chris Johnson	0.69 s	Kotlin	2024-09-13 22:42:26
7	Phường Lên	0.70 s	Kotlin	2019-12-01 18:54:54
8	Adam Koprowski	0.81 s	Kotlin	2020-08-30 00:05:52
9	Mohsen Dehbashi	0.84 s	Kotlin	2021-07-08 06:44:17
10	Emil Wihlander	0.84 s	Kotlin	2023-07-27 12:59:07

#	User	Runtime	Language	Date
1	Shiroy Sattur	0.05 s	Nim	2025-10-11 10:32:24

#	User	Runtime	Language	Date
1	Matthew Lutze	0.03 s	OCaml	2020-07-29 06:36:25

#	User	Runtime	Language	Date
1	Junyu Zhan	0.01 s	Odin	2026-01-20 09:29:27
2	Hidden user	0.04 s	Odin	2025-05-09 04:37:48

#	User	Runtime	Language	Date
1	David Connolly	0.78 s	Pascal	2023-03-03 18:04:31

#	User	Runtime	Language	Date
1	Ahmad Barhamje	0.04 s	Perl	2025-04-30 20:15:14
2	Saito Ta	0.10 s	Perl	2024-03-29 08:45:43

#	User	Runtime	Language	Date
1	Andre Wahyudi	0.02 s	PHP	2023-03-10 08:39:08
2	Renate Fiala-Lundström	0.02 s	PHP	2023-10-27 22:43:24

#	User	Runtime	Language	Date
1	Hakan Kjellerstrand	0.07 s	Prolog	2023-02-12 11:47:23

#	User	Runtime	Language	Date
1	Hermon Mulat	0.04 s	Python 2	2018-11-09 22:08:31
2	Christofer Ohlsson	0.05 s	Python 2	2017-05-18 20:24:55
3	Shixian Fang	0.05 s	Python 2	2017-09-01 21:50:22
4	Jesper Öqvist	0.05 s	Python 2	2019-08-10 11:53:25
5	Yanmarshus Bachtiar	0.05 s	Python 2	2020-08-30 13:53:18
6	a_b__c	0.05 s	Python 2	2021-01-27 10:32:02
7	Andrei Stoica	0.05 s	Python 2	2021-09-22 14:41:30
8	Hidden user	0.06 s	Python 2	2017-05-18 17:43:21
9	Haggai Liu	0.06 s	Python 2	2017-05-23 06:57:23
10	Justin Su	0.06 s	Python 2	2018-03-13 00:45:48

#	User	Runtime	Language	Date
1	Hugo Alayrangues	0.03 s	Python 3	2019-07-30 20:35:19
2	Bryan Wong Wei Heng	0.03 s	Python 3	2019-12-07 20:56:45
3	Loqi Jer	0.04 s	Python 3	2017-12-01 21:47:02
4	Chinese Memer	0.04 s	Python 3	2018-04-07 00:13:18
5	Kasra Ghodsi	0.04 s	Python 3	2018-09-10 17:06:52
6	Lester Muñoz	0.04 s	Python 3	2019-01-29 22:49:54
7	Hidden user	0.04 s	Python 3	2019-03-29 20:05:06
8	Urban Koser	0.04 s	Python 3	2019-04-04 10:55:28
9	Noah Hunt-Isaak	0.04 s	Python 3	2019-09-12 05:15:52
10	April Chao	0.04 s	Python 3	2019-10-24 20:05:15

#	User	Runtime	Language	Date
1	Hanson Lo	0.06 s	Ruby	2018-04-06 23:06:49
2	Hidden user	0.09 s	Ruby	2019-10-07 21:57:47
3	Clement Oh	0.09 s	Ruby	2023-12-09 17:39:30
4	Thomas Feld	0.11 s	Ruby	2022-11-16 10:57:27
5	Eugen Neagoe	0.12 s	Ruby	2026-01-17 03:18:03
6	Matzuka	0.20 s	Ruby	2025-11-01 22:24:08

#	User	Runtime	Language	Date
1	Jonathan Choi	0.00 s	Rust	2024-04-26 18:37:20
2	Vincent Lagerros	0.00 s	Rust	2024-10-12 16:02:27
3	Artur Khuziakhmetov	0.00 s	Rust	2025-03-17 16:58:28
4	Joe Blower	0.00 s	Rust	2025-06-04 04:37:45
5	Adrien Coulier	0.01 s	Rust	2020-04-12 09:02:36
6	Connor Skees	0.01 s	Rust	2020-10-24 21:36:49
7	David Rasch	0.01 s	Rust	2020-10-30 10:01:00
8	Eric Pinter	0.01 s	Rust	2021-06-02 02:50:34
9	Isak Jägberg	0.01 s	Rust	2021-07-01 21:45:59
10	Freek van Keulen	0.01 s	Rust	2021-07-24 09:17:20

#	User	Runtime	Language	Date
1	Danial Haseeb	0.03 s	Swift	2023-10-08 09:13:46
2	La Ode muhammad Yudhy Prayitno	0.19 s	Swift	2025-04-10 02:34:15

#	User	Runtime	Language	Date
1	Joe Blower	0.00 s	Zig	2025-06-03 04:56:18

#	User	Length	Language	Date
1	Martin Blom	420	C	2023-10-11 12:01:04
2	Jeviczki Jane	1076	C	2025-11-07 00:34:09
3	Mirel Cosulschi	1409	C	2024-10-16 09:21:58
4	Marika Olsson	1465	C	2024-10-11 10:52:29
5	Sambit Palit	1556	C	2020-11-06 22:16:27
6	Florian ten Napel	1585	C	2024-10-06 23:30:13
7	PRIYANKA S S	1600	C	2025-10-07 01:34:17
8	Matthew Weston	1931	C	2022-03-04 13:48:51
9	Jacob Sutton	2018	C	2021-01-05 05:34:18
10	Neilvan Thesman	2197	C	2024-06-07 15:47:33

#	User	Length	Language	Date
1	Gregory Sinclair	345	C#	2023-11-07 05:31:43
2	Göran Andersson	613	C#	2022-05-13 23:12:09
3	James Davies	647	C#	2025-03-01 16:19:02
4	Esty Crow	672	C#	2024-11-08 17:56:14
5	Evans Stevenson	736	C#	2023-11-10 21:40:29
6	Benjamin Bilbeau	852	C#	2023-10-10 21:52:12
7	Sal Tringali	876	C#	2023-11-12 19:57:52
8	Hidden user	921	C#	2018-01-29 20:21:29
9	Brad Beise	962	C#	2023-11-08 21:09:27
10	Todd Cottrell	1057	C#	2023-11-09 07:00:52

#	User	Length	Language	Date
1	Tyler Fernando	348	C++	2023-03-21 12:57:24
2	Nicholas Russell Saerang	389	C++	2022-01-01 22:32:13
3	Markus Mathiasen	397	C++	2021-10-05 20:48:59
4	Matthew Joseph Schallenkamp	419	C++	2019-02-22 22:10:04
5	Mugeon Kim	421	C++	2024-03-15 01:26:29
6	Buste Alin	424	C++	2025-03-10 20:13:33
7	Tan Amos	430	C++	2021-02-27 05:57:02
8	Roger Chen	440	C++	2021-08-11 05:10:32
9	Zac Friggstad	441	C++	2020-04-02 02:22:39
10	David Marcos	442	C++	2025-03-20 23:44:33

#	User	Length	Language	Date
1	David Cawthon	797	Common Lisp	2020-07-01 04:19:44

#	User	Length	Language	Date
1	Krzysztof Gibuła	542	Go	2021-03-24 10:34:08
2	Muhammad Ariefuddin Satria Dharma	586	Go	2023-11-08 14:17:41
3	Hidden user	594	Go	2023-11-04 18:41:45
4	Muhammad Abdis	624	Go	2023-11-07 09:36:45
5	Pandhu Hutomo Aditya	746	Go	2023-11-04 08:55:10
6	Diaz Agfa	797	Go	2024-01-21 10:47:01
7	Michael Lapandio	855	Go	2023-11-05 16:12:27
8	Ade Hendra	949	Go	2023-11-06 15:33:39
9	Hidden user	956	Go	2023-11-04 08:24:05
10	Hidden user	956	Go	2023-11-04 08:24:44

#	User	Length	Language	Date
1	David Zacek	249	Haskell	2021-07-09 20:53:04
2	Sebastian Banert	283	Haskell	2023-04-13 19:24:26
3	Jan Hrček	372	Haskell	2020-11-12 08:03:21
4	Steinar Simonnes	420	Haskell	2024-01-31 14:51:02
5	Qi Ji	475	Haskell	2018-07-27 16:14:52
6	Hidden user	479	Haskell	2023-01-12 14:23:00
7	Caleb Surovik	555	Haskell	2021-07-17 03:58:38
8	Greg Rosser	603	Haskell	2023-11-17 09:49:00
9	Brian Hwang	655	Haskell	2021-09-15 23:06:00
10	Joash Chin Synn Khee	741	Haskell	2019-08-07 09:23:33

#	User	Length	Language	Date
1	Du Jiesheng	349	Java	2025-03-07 20:37:08
2	Jeremy Lim	574	Java	2024-11-06 07:42:36
3	Zach Tschetter	592	Java	2021-11-03 01:13:45
4	Adam Grady	595	Java	2021-11-03 22:32:57
5	Jason Liu	599	Java	2023-09-03 23:15:29
6	Raymond Arrington	679	Java	2024-06-17 07:12:03
7	Liu Han	684	Java	2020-03-06 06:06:34
8	Udit Sanghi	700	Java	2021-07-27 20:31:31
9	Carter Henderson	714	Java	2022-03-04 17:53:20
10	Paul Boddington	729	Java	2020-07-12 16:09:07

#	User	Length	Language	Date
1	Erlend Raa Vågset	366	JavaScript (Node.js)	2025-10-09 15:35:00
2	Hidden user	738	JavaScript (Node.js)	2023-08-28 02:34:40
3	Chris Wong	822	JavaScript (Node.js)	2021-03-08 18:09:29
4	Andoko Chandra	936	JavaScript (Node.js)	2020-10-12 14:00:25
5	Sander Hellesø	1068	JavaScript (Node.js)	2019-04-22 21:37:28
6	John	1259	JavaScript (Node.js)	2021-03-08 21:38:45

#	User	Length	Language	Date
1	Jimmy Gustafsson	169	JavaScript (SpiderMonkey)	2024-06-17 22:39:09
2	Peter Kedemo	281	JavaScript (SpiderMonkey)	2017-07-18 22:49:53
3	Christian Pilegaard Cederquist	299	JavaScript (SpiderMonkey)	2023-01-13 21:10:57
4	Zach Tschetter	323	JavaScript (SpiderMonkey)	2025-04-03 21:54:27
5	Bjørn Chr. Soltvedt	379	JavaScript (SpiderMonkey)	2017-05-22 06:00:54
6	Peter Menyes	524	JavaScript (SpiderMonkey)	2021-08-20 11:00:52
7	Paul Leung	660	JavaScript (SpiderMonkey)	2017-05-26 19:25:03
8	Andrew Stoute	685	JavaScript (SpiderMonkey)	2023-11-08 14:34:27

#	User	Length	Language	Date
1	Danny Robinson	142	Julia	2023-09-26 05:25:58
2	Hidden user	361	Julia	2025-03-15 23:41:42
3	Timothy Gaede	537	Julia	2024-05-31 06:49:47

#	User	Length	Language	Date
1	Chris Johnson	350	Kotlin	2024-09-13 22:42:26
2	Mohsen Dehbashi	351	Kotlin	2021-07-08 06:44:17
3	Hidden user	369	Kotlin	2017-11-12 01:11:09
4	Troy Warmboe	385	Kotlin	2023-04-10 23:39:27
5	Adam Koprowski	426	Kotlin	2020-08-30 00:05:52
6	Emil Wihlander	453	Kotlin	2023-07-27 12:59:07
7	Phường Lên	541	Kotlin	2019-12-01 18:54:54
8	Jahid Hasan Imon	659	Kotlin	2020-06-03 22:30:42
9	Johnny Baloney	715	Kotlin	2022-01-16 12:53:15
10	Neil Harmon	956	Kotlin	2019-10-03 12:32:07

#	User	Length	Language	Date
1	Shiroy Sattur	351	Nim	2025-10-11 10:32:24

#	User	Length	Language	Date
1	Matthew Lutze	1172	OCaml	2020-07-29 06:36:25

#	User	Length	Language	Date
1	Hidden user	816	Odin	2025-05-09 04:37:48
2	Junyu Zhan	1142	Odin	2026-01-20 09:29:27

#	User	Length	Language	Date
1	David Connolly	1446	Pascal	2023-03-03 18:04:31

#	User	Length	Language	Date
1	Saito Ta	93	Perl	2024-03-29 08:45:43
2	Ahmad Barhamje	663	Perl	2025-04-30 20:15:14

#	User	Length	Language	Date
1	Renate Fiala-Lundström	512	PHP	2023-10-27 22:43:24
2	Andre Wahyudi	830	PHP	2023-03-10 08:39:08

#	User	Length	Language	Date
1	Hakan Kjellerstrand	350	Prolog	2023-02-12 11:47:23

#	User	Length	Language	Date
1	Thomas Feld	161	Python 2	2019-09-12 15:25:56
2	a_b__c	189	Python 2	2021-01-27 10:32:02
3	Jesper Öqvist	217	Python 2	2019-08-10 11:53:25
4	Yuri Bakulin	223	Python 2	2018-04-06 22:26:04
5	Jarred Parrett	242	Python 2	2019-08-24 21:40:02
6	Andreas Björklund	245	Python 2	2019-12-26 08:56:20
7	Lars Åström	254	Python 2	2019-05-15 23:54:20
8	Hidden user	259	Python 2	2019-04-05 07:04:05
9	Haggai Liu	265	Python 2	2017-05-23 06:57:23
10	Oskar Haarklou Veileborg	272	Python 2	2018-11-14 14:20:47

#	User	Length	Language	Date
1	Kevin Gomez	111	Python 3	2024-11-13 01:14:18
2	Avery	116	Python 3	2025-08-04 07:05:36
3	Alexandre Charland	118	Python 3	2024-09-14 17:50:23
4	Hidden user	119	Python 3	2025-10-07 17:29:12
5	Clement Oh	122	Python 3	2023-06-13 12:40:49
6	Wilmer Ansgariusson	130	Python 3	2024-10-10 13:27:30
7	Alex Loiko	137	Python 3	2024-10-15 20:36:15
8	Farzam Abrishami	139	Python 3	2024-01-20 01:36:43
9	Tai Tze Kin	145	Python 3	2024-05-01 17:16:41
10	Ahmed Chamseddine	145	Python 3	2024-07-13 19:04:17

#	User	Length	Language	Date
1	Thomas Feld	62	Ruby	2022-11-16 10:57:27
2	Matzuka	111	Ruby	2025-11-01 22:25:41
3	Clement Oh	117	Ruby	2023-10-21 18:18:35
4	Hidden user	199	Ruby	2019-10-07 21:57:47
5	Eugen Neagoe	207	Ruby	2026-01-17 03:18:03
6	Hanson Lo	245	Ruby	2018-04-06 23:06:49

#	User	Length	Language	Date
1	Emil Dichmann	553	Rust	2025-09-23 13:59:20
2	Aza Maulana Hadi	686	Rust	2024-03-24 09:34:14
3	Bas Dirks	741	Rust	2022-01-06 12:56:23
4	David Rasch	793	Rust	2020-10-30 10:01:00
5	Artur Khuziakhmetov	822	Rust	2025-03-17 16:58:28
6	Adrien Coulier	842	Rust	2020-04-12 09:02:36
7	Kok Dith	844	Rust	2021-08-14 16:36:16
8	nazifa	850	Rust	2025-04-07 19:29:05
9	Pankajkumar Patro	854	Rust	2024-10-08 15:05:10
10	Hidden user	921	Rust	2024-12-30 06:09:32

#	User	Length	Language	Date
1	Danial Haseeb	558	Swift	2023-10-08 09:13:46
2	La Ode muhammad Yudhy Prayitno	663	Swift	2025-04-10 02:34:15

#	User	Length	Language	Date
1	Joe Blower	1660	Zig	2025-06-03 04:56:18

Solution running time distribution