Problem A
I Repeat Myself I Repeat Myself I Repeat — Problem Statistics

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Submissions	3116
Accepted submissions	1417
Submission ratio	45.47%
Authors	1246
Full solves [?]	1115
Full solve Ratio	89.49%

#	User	Runtime	Language	Date
1	Matzuka	0.04 s	APL	2025-03-21 09:43:17

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.07 s	Bash	2025-09-13 02:38:33

#	User	Runtime	Language	Date
1	Adam Evans	0.00 s	C	2016-04-06 03:34:27
2	Hidden user	0.00 s	C	2017-07-17 04:59:00
3	应泽良	0.00 s	C	2017-09-29 14:56:35
4	Hidden user	0.00 s	C	2017-11-17 04:22:37
5	Noah Ó Donnaile	0.00 s	C	2018-08-07 16:40:31
6	Isaac Pashenkov	0.00 s	C	2020-08-26 21:20:48
7	Albert Lai	0.00 s	C	2020-11-04 22:44:43
8	Pontus Asservik	0.00 s	C	2025-04-01 10:09:39

#	User	Runtime	Language	Date
1	Pavel Volgarev	0.02 s	C#	2016-10-14 20:08:05
2	Marek	0.02 s	C#	2016-10-19 20:12:57
3	Greg Roderick	0.02 s	C#	2016-10-29 10:56:41
4	Przemysław Curzytek	0.02 s	C#	2016-11-07 05:34:24
5	Khin Nyunt	0.02 s	C#	2017-06-03 05:41:52
6	Nelson Penn	0.02 s	C#	2017-09-21 15:00:09
7	Mikael Fiala-Lundström	0.02 s	C#	2021-11-02 01:08:36
8	Göran Andersson	0.02 s	C#	2022-05-30 15:28:51
9	Mads Storm Hansen	0.03 s	C#	2015-07-21 16:06:32
10	Adam Mellen	0.03 s	C#	2017-09-29 11:51:57

#	User	Runtime	Language	Date
1	David Cawthon	0.01 s	Common Lisp	2020-07-05 00:07:42

#	User	Runtime	Language	Date
1	dick move	0.00 s	Crystal	2025-10-16 07:07:49

#	User	Runtime	Language	Date
1	Jesper Bech Christensen	0.03 s	F#	2022-04-05 11:04:03
2	Jacob Harris Cryer Kragh	0.04 s	F#	2022-12-12 17:27:13

#	User	Runtime	Language	Date
1	Einar Andri Víðisson	0.00 s	Go	2025-01-28 00:03:54
2	Joseph Winkie	0.00 s	Go	2025-03-01 11:10:10
3	Norbert Voelker	0.02 s	Go	2021-07-12 20:06:19
4	Hidden user	0.08 s	Go	2019-10-03 17:42:35
5	Hidden user	0.08 s	Go	2022-04-13 21:16:35

#	User	Runtime	Language	Date
1	Brent Yorgey	0.00 s	Haskell	2017-11-10 18:46:06
2	Paul Wild	0.00 s	Haskell	2018-05-16 15:09:15
3	Mitch Stevens	0.00 s	Haskell	2025-06-19 12:24:12
4	David Wärn	0.01 s	Haskell	2015-05-10 16:04:02
5	Lars Tveito	0.01 s	Haskell	2015-09-14 14:50:49
6	姚锦铭	0.01 s	Haskell	2017-08-16 17:01:52
7	Hidden user	0.01 s	Haskell	2019-11-03 14:11:28
8	Ted Bjurlin	0.01 s	Haskell	2024-04-16 22:08:21
9	Fay Carsons	0.01 s	Haskell	2025-07-07 15:41:56

#	User	Runtime	Language	Date
1	Joshua Chin	0.04 s	Java	2025-06-13 17:34:31
2	Simon Xue	0.05 s	Java	2016-03-15 04:32:18
3	Martijn Muijsers	0.05 s	Java	2016-10-27 11:32:06
4	José Vander Meulen	0.05 s	Java	2018-02-03 21:08:09
5	Taras Romanyuk	0.05 s	Java	2024-10-16 18:01:31
6	Reuben James Loquinario	0.05 s	Java	2024-11-07 16:14:41
7	Cesar Gonzalez	0.05 s	Java	2025-11-03 18:41:10
8	Martin Wiberg Petersen	0.06 s	Java	2016-04-25 17:58:06
9	Micah Stairs	0.06 s	Java	2016-08-16 18:50:44
10	Marco Troltsch	0.06 s	Java	2016-10-16 17:41:44

#	User	Runtime	Language	Date
1	Ram Basnet	0.06 s	JavaScript (Node.js)	2018-09-24 01:47:39
2	Jesper Svendgaard Åhman Hansen	0.09 s	JavaScript (Node.js)	2023-01-29 17:00:04
3	Khin Nyunt	0.42 s	JavaScript (Node.js)	2021-11-20 16:58:01

#	User	Runtime	Language	Date
1	Oskar	0.01 s	JavaScript (SpiderMonkey)	2015-09-15 20:28:21
2	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2016-02-21 15:08:45
3	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-03-24 00:45:35
4	Paul Leung	0.01 s	JavaScript (SpiderMonkey)	2017-09-25 15:33:29
5	Zach Tschetter	0.02 s	JavaScript (SpiderMonkey)	2023-06-23 20:02:59
6	Christian Pilegaard Cederquist	0.03 s	JavaScript (SpiderMonkey)	2023-02-23 11:29:13

#	User	Runtime	Language	Date
1	Timothy Gaede	0.51 s	Julia	2024-06-06 13:00:47

#	User	Runtime	Language	Date
1	Marcin Wiśniowski	0.18 s	Kotlin	2017-09-29 13:52:19
2	Dayan Ruben Gonzalez	0.22 s	Kotlin	2020-09-29 02:04:36
3	Neil Harmon	0.23 s	Kotlin	2019-11-29 07:41:16
4	Matthew Lutze	0.25 s	Kotlin	2019-09-26 06:39:39
5	Adam Rankin	0.27 s	Kotlin	2023-05-05 18:31:18
6	Troy Warmboe	0.28 s	Kotlin	2020-03-12 00:28:35

#	User	Runtime	Language	Date
1	Óðinn Ágústsson	0.01 s	Lua	2025-01-28 14:23:14

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Nim	2025-05-26 09:10:14

#	User	Runtime	Language	Date
1	Joel Newman	0.00 s	OCaml	2023-11-04 23:40:05

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2017-09-23 06:29:34

#	User	Runtime	Language	Date
1	Susanne Ragnemalm	0.01 s	PHP	2018-04-06 17:51:34

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.03 s	Prolog	2019-07-13 07:08:32
2	Hadi Qovaizi	0.04 s	Prolog	2018-07-02 03:45:48

#	User	Runtime	Language	Date
1	Tore Norderud	0.03 s	Python 2	2015-09-18 21:37:09
2	Team Baud	0.03 s	Python 2	2015-09-29 17:28:00
3	Patrik Lilja	0.03 s	Python 2	2015-10-15 18:51:08
4	Alvaro Silvino	0.03 s	Python 2	2016-03-25 13:25:32
5	Hidden user	0.03 s	Python 2	2016-07-10 17:15:33
6	Neal Zane	0.03 s	Python 2	2016-08-08 01:07:22
7	Hubert Teo	0.03 s	Python 2	2016-08-12 08:59:54
8	Erik Sillén	0.03 s	Python 2	2016-08-17 20:56:41
9	Jennie Olsson	0.03 s	Python 2	2016-08-26 06:47:27
10	Bridger Howell	0.03 s	Python 2	2016-09-08 04:00:14

#	User	Runtime	Language	Date
1	James Elías Sigurðarson	0.02 s	Python 3	2015-06-15 10:22:28
2	Tammo Behrends	0.02 s	Python 3	2015-11-28 18:16:45
3	Nathan Collins	0.02 s	Python 3	2016-05-19 14:41:07
4	Christian Lindeström	0.02 s	Python 3	2016-09-08 22:44:14
5	Jón Benediktsson	0.02 s	Python 3	2017-02-10 19:16:56
6	Benedikt Aron Sigurþórsson	0.02 s	Python 3	2017-02-13 18:03:35
7	David Bjarki Jonsson	0.02 s	Python 3	2017-02-13 18:06:40
8	David Brink	0.02 s	Python 3	2017-02-18 10:07:42
9	Sebastian Dolan	0.02 s	Python 3	2017-04-29 20:33:46
10	Jón Steinn Elíasson	0.02 s	Python 3	2017-06-15 08:10:30

#	User	Runtime	Language	Date
1	Hidden user	0.05 s	Ruby	2019-12-16 23:53:10
2	Thomas Feld	0.06 s	Ruby	2023-02-09 08:27:56
3	Chenzhang Hu	0.07 s	Ruby	2024-06-03 16:47:42

#	User	Runtime	Language	Date
1	Bas Dirks	0.00 s	Rust	2022-01-18 21:41:21
2	Vincent Lagerros	0.00 s	Rust	2024-11-17 00:28:51
3	Hidden user	0.00 s	Rust	2025-08-03 06:49:19

#	User	Runtime	Language	Date
1	Oleksii Ihnatenko	0.00 s	Zig	2025-07-14 21:56:49

#	User	Length	Language	Date
1	Matzuka	155	APL	2025-03-21 09:43:17

#	User	Length	Language	Date
1	Chenzhang Hu	51	Bash	2025-09-13 02:38:33

#	User	Length	Language	Date
1	Hidden user	579	C	2017-11-17 04:22:37
2	Adam Evans	700	C	2016-04-06 03:34:27
3	Noah Ó Donnaile	850	C	2018-08-07 16:40:31
4	Albert Lai	874	C	2020-11-04 22:44:43
5	Isaac Pashenkov	1251	C	2020-08-26 21:20:48
6	应泽良	1364	C	2017-09-29 14:56:35
7	Hidden user	2074	C	2017-07-17 04:59:00
8	Pontus Asservik	3870	C	2025-04-01 10:09:39

#	User	Length	Language	Date
1	traxex	433	C#	2024-05-16 16:57:00
2	Göran Andersson	685	C#	2022-05-30 15:28:51
3	Khin Nyunt	720	C#	2017-06-03 05:41:52
4	Walkyria Audivert Lino	727	C#	2025-06-20 20:32:54
5	Gustav Kalander	938	C#	2018-02-23 19:15:14
6	Marek	1035	C#	2016-10-19 20:12:57
7	Adam Mellen	1154	C#	2017-09-29 11:51:57
8	Pavel Volgarev	1309	C#	2016-10-14 20:08:05
9	Gerhard Kloppers	1319	C#	2025-03-16 14:55:19
10	Mads Storm Hansen	1464	C#	2015-07-21 16:06:32

#	User	Length	Language	Date
1	James Tan	325	C++	2024-10-25 12:27:57
2	Johan Wind	339	C++	2018-04-27 16:12:51
3	Veigar Elí Grétarsson	378	C++	2024-09-02 23:24:28
4	William Gan	405	C++	2016-03-26 12:06:55
5	Đoàn Công Chính	416	C++	2018-02-04 09:28:06
6	Yusan Leung Liu	420	C++	2015-11-04 19:02:58
7	Austin Fernandez	428	C++	2019-09-26 16:49:08
8	Mike Gao	430	C++	2021-11-05 21:04:20
9	Marcel Wienöbst	433	C++	2025-07-04 13:10:06
10	Leonardo Blanger	435	C++	2021-02-10 01:39:38

#	User	Length	Language	Date
1	David Cawthon	734	Common Lisp	2020-07-05 00:07:42

#	User	Length	Language	Date
1	dick move	173	Crystal	2025-10-16 07:07:49

#	User	Length	Language	Date
1	Jesper Bech Christensen	423	F#	2022-04-05 11:04:03
2	Jacob Harris Cryer Kragh	786	F#	2022-12-12 17:27:13

#	User	Length	Language	Date
1	Hidden user	423	Go	2022-04-13 21:16:35
2	Einar Andri Víðisson	654	Go	2025-01-28 00:03:54
3	Norbert Voelker	717	Go	2021-07-12 20:06:19
4	Hidden user	1240	Go	2019-10-03 17:42:35
5	Joseph Winkie	1362	Go	2025-03-01 11:10:10

#	User	Length	Language	Date
1	Paul Wild	146	Haskell	2018-05-16 15:09:15
2	David Wärn	152	Haskell	2015-05-10 16:04:02
3	Fay Carsons	307	Haskell	2025-07-07 15:41:56
4	Lars Tveito	330	Haskell	2015-09-14 14:50:49
5	Mitch Stevens	431	Haskell	2025-06-19 12:24:35
6	姚锦铭	477	Haskell	2017-08-16 17:01:52
7	Ted Bjurlin	541	Haskell	2024-04-16 22:08:21
8	Brent Yorgey	692	Haskell	2017-11-10 18:46:06
9	Hidden user	8766	Haskell	2019-11-03 14:14:56

#	User	Length	Language	Date
1	Khin Nyunt	466	Java	2017-11-08 15:36:58
2	Doug Goodman	504	Java	2018-01-04 16:27:16
3	Zoe Ho	566	Java	2022-11-21 19:56:48
4	Micah Stairs	568	Java	2016-08-16 18:50:44
5	Benjamin Lo	579	Java	2021-11-05 21:54:32
6	Erik Baalhuis	590	Java	2016-08-16 03:31:47
7	Yijia Jing	593	Java	2021-03-15 12:52:39
8	Hidden user	623	Java	2018-06-11 20:10:35
9	José Vander Meulen	632	Java	2018-02-03 20:52:50
10	Paul Boddington	633	Java	2016-05-02 15:26:09

#	User	Length	Language	Date
1	Ram Basnet	450	JavaScript (Node.js)	2018-09-24 01:47:39
2	Jesper Svendgaard Åhman Hansen	544	JavaScript (Node.js)	2023-01-29 17:07:16
3	Khin Nyunt	645	JavaScript (Node.js)	2021-11-20 16:58:01

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	305	JavaScript (SpiderMonkey)	2023-02-23 11:29:13
2	Paul Leung	306	JavaScript (SpiderMonkey)	2017-09-25 15:33:29
3	Peter Kedemo	440	JavaScript (SpiderMonkey)	2016-02-21 15:08:45
4	Zach Tschetter	474	JavaScript (SpiderMonkey)	2023-06-23 20:02:59
5	Oskar	590	JavaScript (SpiderMonkey)	2015-09-15 20:28:21
6	Bjørn Chr. Soltvedt	628	JavaScript (SpiderMonkey)	2016-03-24 00:45:35

#	User	Length	Language	Date
1	Timothy Gaede	876	Julia	2024-06-06 13:00:47

#	User	Length	Language	Date
1	Adam Rankin	402	Kotlin	2023-05-05 18:31:18
2	Troy Warmboe	444	Kotlin	2020-03-12 00:28:35
3	Dayan Ruben Gonzalez	534	Kotlin	2020-09-29 02:04:36
4	Matthew Lutze	672	Kotlin	2019-09-26 06:39:39
5	Marcin Wiśniowski	969	Kotlin	2017-09-29 13:52:19
6	Neil Harmon	1033	Kotlin	2019-11-29 07:41:16

#	User	Length	Language	Date
1	Óðinn Ágústsson	430	Lua	2025-01-28 14:23:14

#	User	Length	Language	Date
1	Hidden user	277	Nim	2025-05-26 09:10:14

#	User	Length	Language	Date
1	Joel Newman	686	OCaml	2023-11-04 23:40:05

#	User	Length	Language	Date
1	Ingemar Ragnemalm	682	Pascal	2017-09-23 06:29:34

#	User	Length	Language	Date
1	Susanne Ragnemalm	420	PHP	2018-04-06 17:51:34

#	User	Length	Language	Date
1	Andriy Zyevakov	687	Prolog	2019-07-13 07:08:32
2	Hadi Qovaizi	1885	Prolog	2020-06-12 15:18:24

#	User	Length	Language	Date
1	Thomas Feld	125	Python 2	2019-09-13 09:22:16
2	Herbert Ilhan Tanujaya	176	Python 2	2019-05-03 16:48:03
3	Andreas Eisele	184	Python 2	2018-09-07 13:26:28
4	Wang Zhi Jian	201	Python 2	2019-04-26 12:56:45
5	Johan Lyts	210	Python 2	2020-09-21 12:31:16
6	Hidden user	214	Python 2	2016-07-10 17:15:33
7	Andreas Björklund	223	Python 2	2020-03-12 20:24:08
8	Hubert Teo	237	Python 2	2016-08-12 08:59:54
9	Patrik Lilja	243	Python 2	2015-10-15 18:51:08
10	Tore Norderud	245	Python 2	2015-09-18 21:37:09

#	User	Length	Language	Date
1	Elias Lundell	71	Python 3	2023-07-16 20:42:21
2	Tobias Glimmerfors	71	Python 3	2023-07-16 20:44:47
3	Harry Zhang	80	Python 3	2023-07-16 20:51:15
4	Benjamin Z White	94	Python 3	2023-05-07 09:00:46
5	Clement Oh	98	Python 3	2023-05-25 17:08:49
6	Emil Sandberg	103	Python 3	2023-07-18 10:18:40
7	Sam Chen	113	Python 3	2025-11-06 19:52:07
8	Ahmed Chamseddine	118	Python 3	2023-09-01 14:23:25
9	Anton Maksinen	136	Python 3	2025-07-02 14:48:57
10	Thomas Vu	143	Python 3	2019-03-14 03:17:23

#	User	Length	Language	Date
1	Chenzhang Hu	45	Ruby	2024-11-29 09:04:01
2	Thomas Feld	46	Ruby	2023-02-09 09:09:22
3	Hidden user	354	Ruby	2019-12-16 23:53:10

#	User	Length	Language	Date
1	Vincent Lagerros	427	Rust	2024-11-17 00:28:51
2	Bas Dirks	591	Rust	2022-01-18 21:41:21
3	Hidden user	1252	Rust	2025-08-03 06:49:19

#	User	Length	Language	Date
1	Oleksii Ihnatenko	1115	Zig	2025-07-14 21:56:49

Solution running time distribution