Problem A
Marko — Problem Statistics

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Submissions	2098
Accepted submissions	1149
Submission ratio	54.77%
Authors	1055
Full solves [?]	991
Full solve Ratio	93.93%

#	User	Runtime	Language	Date
1	Danny Robinson	0.01 s	Bash	2023-09-26 12:43:16

#	User	Runtime	Language	Date
1	Jón Steinn Elíasson	0.00 s	C	2017-06-07 11:01:09
2	Sergio Eduardo Quintanilla Contreras	0.00 s	C	2017-11-02 14:33:04
3	Bassam	0.00 s	C	2018-05-03 07:28:02
4	William Chen	0.00 s	C	2019-05-01 05:59:19
5	PhilCampbell	0.00 s	C	2021-01-19 12:27:01
6	Axat Patel	0.00 s	C	2023-09-05 09:19:41
7	Quân Anh	0.00 s	C	2024-04-01 22:20:26
8	Eduardo Vicente Petry	0.00 s	C	2025-08-12 22:55:31
9	Johan Öhlin	0.01 s	C	2017-09-28 12:56:52
10	Andrew Roberts	0.01 s	C	2017-10-12 03:12:42

#	User	Runtime	Language	Date
1	Marek	0.02 s	C#	2016-08-31 18:20:53
2	Piotr Włodek	0.03 s	C#	2016-08-31 19:18:29
3	Michael Malkiewicz	0.03 s	C#	2016-10-30 17:39:57
4	Henrik Hallbert	0.03 s	C#	2022-01-16 14:43:59
5	Andrzej Krajniak	0.04 s	C#	2016-08-31 18:18:10
6	Sebastian Garcia	0.04 s	C#	2019-02-15 22:52:08
7	Thomas Norris	0.04 s	C#	2020-01-07 21:05:51
8	Göran Andersson	0.04 s	C#	2022-05-16 20:09:42
9	Esty Crow	0.05 s	C#	2024-08-30 16:53:51
10	Duelene Olson	0.06 s	C#	2017-04-27 22:22:34

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.10 s	F#	2022-10-05 19:09:52

#	User	Runtime	Language	Date
1	Magix	0.09 s	Go	2020-09-17 14:53:22
2	Norbert Voelker	0.09 s	Go	2021-04-24 00:20:19
3	Ian Howell	0.91 s	Go	2020-02-18 17:28:19

#	User	Runtime	Language	Date
1	Hidden user	0.06 s	Haskell	2022-12-27 13:14:39
2	Hidden user	0.07 s	Haskell	2019-08-28 18:28:38
3	Intrets	0.07 s	Haskell	2019-09-02 13:32:11
4	Brent Yorgey	0.08 s	Haskell	2017-10-21 06:03:43
5	Olle Eriksson	0.08 s	Haskell	2018-06-28 11:49:50
6	Aurélien Pepin	0.08 s	Haskell	2019-11-20 19:04:05
7	Jan Hrček	0.08 s	Haskell	2020-10-18 15:53:25
8	Sebastian Banert	0.09 s	Haskell	2023-09-27 00:07:10
9	John Grzechowiak	0.11 s	Haskell	2017-03-09 15:51:44
10	Steinar Simonnes	0.64 s	Haskell	2020-10-08 08:43:42

#	User	Runtime	Language	Date
1	Lee Heng Sheng	0.07 s	Java	2025-11-29 08:48:40
2	Sven Rönnbäck	0.08 s	Java	2022-10-17 11:22:39
3	Alexander Tkachov	0.10 s	Java	2017-11-01 11:38:35
4	Joachim Nybo	0.12 s	Java	2016-05-09 07:10:15
5	Martijn Muijsers	0.12 s	Java	2016-10-05 22:18:47
6	Marcus Werlinder	0.12 s	Java	2018-12-02 23:33:57
7	Terrence Park	0.13 s	Java	2016-03-17 00:11:20
8	Micah Stairs	0.13 s	Java	2016-03-22 13:20:30
9	Hidden user	0.13 s	Java	2016-11-20 19:32:05
10	Michel Langeveld	0.13 s	Java	2016-12-03 07:20:08

#	User	Runtime	Language	Date
1	Samuel Högfeldt	0.12 s	JavaScript (Node.js)	2022-08-26 10:02:28
2	Sander Hellesø	0.17 s	JavaScript (Node.js)	2019-04-21 21:30:19
3	Matthew Jones	0.22 s	JavaScript (Node.js)	2023-09-09 04:44:44
4	Chris Wong	0.45 s	JavaScript (Node.js)	2021-03-05 12:27:00
5	Andoko Chandra	0.47 s	JavaScript (Node.js)	2020-10-12 08:10:09

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.04 s	JavaScript (SpiderMonkey)	2016-03-16 23:02:17
2	Paul Leung	0.06 s	JavaScript (SpiderMonkey)	2017-05-25 17:01:37
3	Peter Menyes	0.06 s	JavaScript (SpiderMonkey)	2021-09-17 16:59:09
4	Jimmy Gustafsson	0.10 s	JavaScript (SpiderMonkey)	2024-07-15 22:17:02
5	Peter Kedemo	0.12 s	JavaScript (SpiderMonkey)	2016-05-31 23:18:31
6	Christian LaCourt	0.17 s	JavaScript (SpiderMonkey)	2016-09-13 23:38:34
7	Christian Pilegaard Cederquist	0.18 s	JavaScript (SpiderMonkey)	2023-01-17 22:58:18

#	User	Runtime	Language	Date
1	Timothy Gaede	0.65 s	Julia	2024-06-13 06:56:01

#	User	Runtime	Language	Date
1	Lam Gia Thuan	0.30 s	Kotlin	2017-10-31 22:59:55
2	Hidden user	0.34 s	Kotlin	2017-11-24 03:34:19
3	Troy Warmboe	0.49 s	Kotlin	2020-02-07 19:48:39
4	Adam Rankin	0.49 s	Kotlin	2023-05-12 02:15:43
5	Emil Wihlander	0.49 s	Kotlin	2024-07-31 00:53:20
6	Einar Kjellback	0.50 s	Kotlin	2020-01-20 22:14:01
7	Neil Harmon	0.58 s	Kotlin	2019-05-15 09:50:33

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.01 s	Pascal	2019-02-08 19:01:19

#	User	Runtime	Language	Date
1	Silvena Lam	0.04 s	PHP	2017-07-07 08:52:33

#	User	Runtime	Language	Date
1	Hakan Kjellerstrand	0.14 s	Prolog	2023-02-17 18:07:32

#	User	Runtime	Language	Date
1	Josenildo Silva	0.03 s	Python 2	2017-05-12 23:31:40
2	Riko Jacob	0.03 s	Python 2	2019-04-09 00:29:38
3	Olof Heurgren	0.04 s	Python 2	2016-03-31 15:25:48
4	Cole Bite	0.04 s	Python 2	2017-04-17 18:31:34
5	Maksym Bendeberia	0.04 s	Python 2	2017-06-26 20:23:28
6	Çağdaş Öztekin	0.04 s	Python 2	2017-09-13 13:49:34
7	Sala Gabriel	0.04 s	Python 2	2017-09-20 01:50:06
8	Raphaël Margueron	0.04 s	Python 2	2018-10-12 22:19:42
9	Christofer Ohlsson	0.05 s	Python 2	2016-03-29 08:45:55
10	Johann Ly	0.05 s	Python 2	2018-07-16 04:36:04

#	User	Runtime	Language	Date
1	Ivan Carvalho	0.04 s	Python 3	2018-05-04 20:23:54
2	George Kamtziridis	0.04 s	Python 3	2018-12-06 22:51:21
3	Jacob Raymond	0.04 s	Python 3	2019-08-19 04:25:03
4	Theo Coyne Morgan	0.04 s	Python 3	2019-08-25 19:19:50
5	Hakan Celik	0.05 s	Python 3	2017-12-16 14:03:45
6	Alexey Kaurov	0.05 s	Python 3	2018-07-23 08:46:36
7	Anatole HAGBE	0.05 s	Python 3	2018-11-22 03:12:24
8	Vedran Čačić	0.05 s	Python 3	2019-03-05 11:19:39
9	Austin Fernandez	0.05 s	Python 3	2019-09-25 12:43:47
10	Hidden user	0.05 s	Python 3	2019-10-04 18:39:57

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Ruby	2023-05-01 11:58:35
2	Hidden user	0.11 s	Ruby	2019-10-04 18:23:25
3	Davi Guimarães Leite	0.18 s	Ruby	2019-03-09 01:40:18
4	Mehdi Maick	0.21 s	Ruby	2016-09-02 17:25:03
5	Kok Dith	0.21 s	Ruby	2021-08-20 15:47:45

#	User	Runtime	Language	Date
1	David Rasch	0.00 s	Rust	2020-10-21 14:44:22
2	Vincent Lagerros	0.00 s	Rust	2025-06-24 01:35:21
3	Freek van Keulen	0.01 s	Rust	2021-12-21 08:28:18
4	Bas Dirks	0.01 s	Rust	2022-02-05 08:50:40
5	Isak Jägberg	0.01 s	Rust	2024-10-19 23:42:13
6	Pankajkumar Patro	0.01 s	Rust	2025-06-22 23:57:41
7	David Zacek	0.02 s	Rust	2021-06-11 01:01:16

#	User	Length	Language	Date
1	Danny Robinson	82	Bash	2023-09-26 12:48:15

#	User	Length	Language	Date
1	Ng Wei Jie	924	C	2020-02-18 11:14:55
2	Axat Patel	924	C	2023-09-05 09:19:41
3	Andrew Roberts	928	C	2017-10-12 03:12:42
4	Jón Steinn Elíasson	962	C	2017-06-07 11:01:09
5	Sergio Eduardo Quintanilla Contreras	962	C	2017-11-02 14:33:04
6	Bassam	962	C	2018-05-03 07:28:02
7	William Chen	962	C	2019-05-01 05:59:19
8	Daniel Lawrence	962	C	2020-07-13 22:06:38
9	Jeya Yoga Lakshmi	962	C	2020-09-07 04:53:30
10	Johan Öhlin	1205	C	2017-09-28 12:56:52

#	User	Length	Language	Date
1	Gregory Sinclair	314	C#	2023-11-26 01:45:47
2	traxex	570	C#	2024-05-27 08:10:42
3	Esty Crow	591	C#	2024-08-30 16:53:51
4	Anthony Ye	766	C#	2024-09-13 20:32:59
5	Göran Andersson	801	C#	2022-05-16 20:09:42
6	Sebastian Garcia	1093	C#	2019-02-15 22:52:08
7	Michael Malkiewicz	1104	C#	2016-10-30 17:39:57
8	Gustav Junedahl	1279	C#	2022-04-25 11:54:40
9	Duelene Olson	1745	C#	2017-04-27 22:22:34
10	Henrik Hallbert	1813	C#	2022-01-16 14:43:59

#	User	Length	Language	Date
1	Herman Karlsson	325	C++	2016-11-10 01:07:05
2	Đậu Huy Minh	411	C++	2023-12-05 13:16:47
3	Hyunjun Lee	452	C++	2022-11-11 02:19:26
4	Robert Kramer	458	C++	2023-09-09 20:46:04
5	Richard Putra	472	C++	2018-03-01 09:56:38
6	Samuel Tan	478	C++	2022-12-19 11:07:06
7	Hrant Hovhannisyan	493	C++	2017-03-18 08:17:59
8	Li Jiayu	502	C++	2021-12-07 04:39:25
9	Chen Zhe	506	C++	2021-10-22 13:16:44
10	Grae Yeandle	512	C++	2016-12-05 15:20:22

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	897	F#	2022-10-05 19:09:52

#	User	Length	Language	Date
1	Ian Howell	827	Go	2020-02-18 17:28:19
2	Norbert Voelker	1049	Go	2021-04-24 00:20:19
3	Magix	1573	Go	2020-09-17 14:53:22

#	User	Length	Language	Date
1	Sebastian Banert	465	Haskell	2023-09-27 00:07:10
2	Hidden user	629	Haskell	2019-08-28 18:28:38
3	Aurélien Pepin	697	Haskell	2019-11-20 19:04:05
4	Brent Yorgey	711	Haskell	2017-10-21 06:03:43
5	Steinar Simonnes	716	Haskell	2020-10-08 08:43:42
6	John Grzechowiak	741	Haskell	2017-03-09 15:51:44
7	Jan Hrček	753	Haskell	2020-10-18 15:53:25
8	Hidden user	918	Haskell	2022-12-27 13:14:39
9	Olle Eriksson	1235	Haskell	2018-06-28 11:49:50
10	Intrets	1924	Haskell	2019-09-02 13:32:11

#	User	Length	Language	Date
1	Son Lam Hai	628	Java	2018-10-21 18:42:10
2	Doug Goodman	699	Java	2018-02-14 22:55:14
3	Vinh Phạm	747	Java	2017-11-06 21:42:43
4	Ben Cobb	806	Java	2021-04-07 22:49:03
5	Blake Bleem	827	Java	2020-11-02 23:48:07
6	Marshall D Feng	831	Java	2022-03-28 04:13:02
7	Joel Gritter	833	Java	2020-12-12 10:37:46
8	Mary Jane Pack	836	Java	2024-02-01 20:24:42
9	Caeden Whitaker	849	Java	2020-07-21 05:40:26
10	James Black	852	Java	2017-08-02 01:39:21

#	User	Length	Language	Date
1	Matthew Jones	682	JavaScript (Node.js)	2023-09-09 04:44:44
2	Chris Wong	1124	JavaScript (Node.js)	2021-03-05 12:27:00
3	Andoko Chandra	1147	JavaScript (Node.js)	2020-10-12 08:10:09
4	Samuel Högfeldt	1157	JavaScript (Node.js)	2022-08-26 10:02:28
5	Sander Hellesø	1397	JavaScript (Node.js)	2019-04-21 21:30:19

#	User	Length	Language	Date
1	Jimmy Gustafsson	262	JavaScript (SpiderMonkey)	2024-07-15 22:17:50
2	Christian Pilegaard Cederquist	292	JavaScript (SpiderMonkey)	2023-01-17 22:58:18
3	Bjørn Chr. Soltvedt	463	JavaScript (SpiderMonkey)	2016-03-16 23:02:17
4	Peter Menyes	515	JavaScript (SpiderMonkey)	2021-09-17 16:59:09
5	Christian LaCourt	659	JavaScript (SpiderMonkey)	2016-09-13 23:38:34
6	Peter Kedemo	728	JavaScript (SpiderMonkey)	2016-05-31 23:18:31
7	Paul Leung	865	JavaScript (SpiderMonkey)	2017-05-25 17:01:37

#	User	Length	Language	Date
1	Timothy Gaede	791	Julia	2024-06-13 06:56:01

#	User	Length	Language	Date
1	Emil Wihlander	572	Kotlin	2024-07-31 00:53:20
2	Einar Kjellback	683	Kotlin	2020-01-20 22:14:01
3	Troy Warmboe	777	Kotlin	2020-02-07 19:48:39
4	Hidden user	811	Kotlin	2017-11-24 03:34:19
5	Adam Rankin	980	Kotlin	2023-05-12 02:15:43
6	Lam Gia Thuan	1113	Kotlin	2017-10-31 22:59:55
7	Neil Harmon	1270	Kotlin	2019-05-15 09:50:33

#	User	Length	Language	Date
1	Ingemar Ragnemalm	1262	Pascal	2019-02-08 19:01:19

#	User	Length	Language	Date
1	Silvena Lam	783	PHP	2017-07-07 09:02:43

#	User	Length	Language	Date
1	Hakan Kjellerstrand	565	Prolog	2023-02-17 18:07:32

#	User	Length	Language	Date
1	Thomas Feld	176	Python 2	2019-09-09 12:15:06
2	Simon Vestin	249	Python 2	2020-02-29 10:30:21
3	Johan Lyts	333	Python 2	2019-08-08 21:53:02
4	Riko Jacob	351	Python 2	2019-04-09 00:29:38
5	William Gan	360	Python 2	2017-12-25 07:44:28
6	Justin Su	361	Python 2	2017-09-19 08:40:42
7	Jesper Öqvist	377	Python 2	2018-10-25 18:23:32
8	Andreas Björklund	378	Python 2	2021-04-05 15:28:33
9	Johann Ly	424	Python 2	2018-07-16 04:36:04
10	Lars Åström	429	Python 2	2019-10-03 14:43:13

#	User	Length	Language	Date
1	Benjamin Z White	142	Python 3	2023-04-25 11:01:46
2	Ahmed Chamseddine	145	Python 3	2023-10-06 12:10:27
3	Charles Ancheta	170	Python 3	2023-03-24 06:06:15
4	Tai Tze Kin	183	Python 3	2024-05-05 11:22:16
5	Thibault Raffaillac	193	Python 3	2023-08-14 13:50:57
6	Shashank Bhatt	193	Python 3	2024-08-22 19:53:51
7	Marcus Xu	208	Python 3	2021-12-27 16:33:38
8	Hidden user	216	Python 3	2018-10-27 22:07:50
9	Arnav Sastry	225	Python 3	2021-06-05 18:17:27
10	András Biczó	252	Python 3	2022-12-21 20:11:23

#	User	Length	Language	Date
1	Thomas Feld	58	Ruby	2023-05-01 12:15:55
2	Hidden user	341	Ruby	2019-10-04 18:23:25
3	Kok Dith	411	Ruby	2021-08-20 15:47:45
4	Davi Guimarães Leite	499	Ruby	2019-03-09 01:40:18
5	Mehdi Maick	635	Ruby	2016-09-02 17:25:03

#	User	Length	Language	Date
1	Vincent Lagerros	635	Rust	2025-06-24 01:35:21
2	Pankajkumar Patro	889	Rust	2025-06-22 23:57:41
3	Isak Jägberg	921	Rust	2024-10-19 23:42:13
4	David Rasch	926	Rust	2020-10-21 14:44:22
5	David Zacek	1306	Rust	2021-06-11 01:01:16
6	Bas Dirks	1517	Rust	2022-02-05 08:50:40
7	Freek van Keulen	1628	Rust	2021-12-21 08:28:18

Solution running time distribution