Problem A
Periodic Strings — Problem Statistics

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Submissions	2354
Accepted submissions	1155
Submission ratio	49.07%
Authors	1111
Full solves [?]	964
Full solve Ratio	86.77%

#	User	Runtime	Language	Date
1	Olav Røthe Bakken	0.00 s	C	2018-08-24 19:34:38
2	Feng Xinyuan	0.00 s	C	2020-05-13 14:16:43
3	Lee Yi Kai	0.00 s	C	2020-05-13 14:29:36
4	Sambit Palit	0.00 s	C	2020-11-03 19:07:52
5	Bergur Snorrason	0.00 s	C	2020-11-05 15:23:16
6	Raymond Yang	0.00 s	C	2021-12-29 01:54:58
7	Jordan Perry	0.00 s	C	2023-02-18 23:11:25
8	Mirel Cosulschi	0.00 s	C	2025-01-18 16:55:52
9	Max McGinty	0.00 s	C	2025-04-25 01:27:02

#	User	Runtime	Language	Date
1	Jacob Aufdenberg	0.02 s	C#	2019-05-16 21:08:28
2	Henning Odén	0.02 s	C#	2019-11-08 16:14:00
3	Caspian Berggren	0.02 s	C#	2019-11-11 22:39:11
4	Eralp Karakullukcu	0.02 s	C#	2020-04-30 17:04:46
5	Daniel Ledger	0.02 s	C#	2020-10-17 13:20:09
6	Hidden user	0.04 s	C#	2024-09-05 16:05:47
7	Laurens Fijn van Draat	0.04 s	C#	2024-09-05 16:17:43
8	Ilya	0.04 s	C#	2024-09-05 16:18:00
9	Steven Heinen	0.04 s	C#	2024-09-05 16:26:43
10	Mihai Spătariu	0.04 s	C#	2024-09-05 16:33:53

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	Common Lisp	2019-07-17 23:16:21

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.03 s	F#	2023-01-28 18:00:00

#	User	Runtime	Language	Date
1	Akhikumar Indurti	0.07 s	Go	2018-10-13 00:19:39
2	Hidden user	0.08 s	Go	2021-04-04 00:09:55
3	Norbert Voelker	0.08 s	Go	2021-07-25 22:28:09

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Haskell	2023-01-04 03:38:53
2	Md Akif Chowdhury	0.00 s	Haskell	2023-07-08 10:30:16
3	Steinar Simonnes	0.00 s	Haskell	2024-05-16 09:41:43
4	Brent Yorgey	0.01 s	Haskell	2018-05-04 06:25:57
5	BlackcapCoder	0.01 s	Haskell	2019-05-12 11:42:02
6	Ziyao Wei	0.01 s	Haskell	2020-03-08 19:27:33
7	Liam Chung	0.01 s	Haskell	2020-11-14 05:23:24
8	Quinn Flavel	0.01 s	Haskell	2021-01-20 00:11:43
9	Hidden user	0.01 s	Haskell	2021-06-05 14:49:37
10	Agus Sentosa Hermawan	0.01 s	Haskell	2021-10-31 14:02:16

#	User	Runtime	Language	Date
1	Bas te Kolste	0.04 s	Java	2024-09-05 16:08:48
2	Joost Linthorst	0.04 s	Java	2024-09-05 16:47:56
3	Martijn den Hoedt	0.04 s	Java	2024-09-05 19:14:00
4	Taras Romanyuk	0.04 s	Java	2024-10-16 20:18:51
5	Serena Davis	0.04 s	Java	2025-10-09 00:54:41
6	Luis Varona	0.04 s	Java	2025-10-09 01:42:23
7	Lizhong Wang	0.05 s	Java	2018-04-17 12:20:08
8	Ashu Yadav	0.05 s	Java	2018-07-13 13:16:10
9	Ahmad Barhamje	0.05 s	Java	2018-08-24 19:23:28
10	Eroui Abdelaziz	0.05 s	Java	2018-08-27 18:57:07

#	User	Runtime	Language	Date
1	Peter Kedemo	0.41 s	JavaScript (Node.js)	2019-12-29 11:00:52
2	Teo Diaz	0.42 s	JavaScript (Node.js)	2021-04-08 10:21:36

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2018-05-02 23:54:43
2	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-03-30 13:22:00
3	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2025-07-23 23:39:23

#	User	Runtime	Language	Date
1	Timothy Gaede	0.59 s	Julia	2024-05-06 05:59:36

#	User	Runtime	Language	Date
1	Hidden user	0.14 s	Kotlin	2020-03-25 02:37:36
2	Ryan McCampbell	0.19 s	Kotlin	2018-10-13 00:04:51
3	Adam Rankin	0.19 s	Kotlin	2023-08-31 05:53:34
4	Damien Ryan Allison	0.19 s	Kotlin	2024-04-16 18:17:52
5	Neil Harmon	0.20 s	Kotlin	2019-10-29 10:18:20
6	Phường Lên	0.22 s	Kotlin	2020-03-28 03:04:50

#	User	Runtime	Language	Date
1	Peter Beattie	0.02 s	Python 2	2018-03-19 14:02:40
2	João Pedro Alvito	0.02 s	Python 2	2018-03-23 10:26:04
3	Alex Zhao	0.02 s	Python 2	2018-04-28 19:26:49
4	Hermon Mulat	0.03 s	Python 2	2018-07-28 17:53:09
5	Fatima Afzali	0.03 s	Python 2	2018-10-20 18:11:38
6	Johann Ly	0.03 s	Python 2	2018-10-27 08:18:31
7	Jesper Öqvist	0.03 s	Python 2	2018-10-28 17:16:57
8	Lars Åström	0.03 s	Python 2	2018-11-01 10:08:27
9	Björn Magnusson	0.03 s	Python 2	2018-11-02 22:25:13
10	Måns Magnusson	0.03 s	Python 2	2018-11-04 22:00:39

#	User	Runtime	Language	Date
1	Christofer Ohlsson	0.02 s	Python 3	2018-02-24 19:43:49
2	Wayne	0.02 s	Python 3	2018-02-25 23:04:12
3	Ciara Godwin	0.02 s	Python 3	2018-02-27 23:31:21
4	Tomas Lagland	0.02 s	Python 3	2018-03-01 16:10:08
5	Clinton Poserio	0.02 s	Python 3	2018-03-14 05:09:56
6	Joseph Campbell	0.02 s	Python 3	2018-04-06 03:05:25
7	Hakan Celik	0.02 s	Python 3	2018-04-08 17:24:33
8	Jiedong Duan	0.02 s	Python 3	2018-04-28 19:39:41
9	Annika Zhang	0.02 s	Python 3	2018-04-28 19:42:32
10	Zacaria Balkhy	0.02 s	Python 3	2018-04-28 20:54:46

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Ruby	2023-03-28 14:39:39
2	Alexander Bilde Pedersen	0.06 s	Ruby	2023-05-05 18:08:57

#	User	Runtime	Language	Date
1	Bas Dirks	0.00 s	Rust	2022-01-19 14:41:34
2	Ben Heard	0.00 s	Rust	2022-10-27 00:07:35
3	David Rasch	0.00 s	Rust	2023-09-28 12:29:56
4	Chris Seager	0.00 s	Rust	2025-04-25 00:52:36
5	Vincent Lagerros	0.00 s	Rust	2025-08-10 02:09:21

#	User	Length	Language	Date
1	Jordan Perry	474	C	2023-02-18 23:11:25
2	Olav Røthe Bakken	541	C	2018-08-24 19:34:38
3	Raymond Yang	756	C	2021-12-29 01:54:58
4	Mirel Cosulschi	894	C	2025-01-18 16:55:52
5	Max McGinty	1130	C	2025-04-25 01:27:02
6	Sambit Palit	1441	C	2020-11-03 19:07:52
7	Bergur Snorrason	1697	C	2020-11-05 15:23:16
8	Feng Xinyuan	1722	C	2020-05-13 14:16:43
9	Lee Yi Kai	1730	C	2020-05-13 14:29:36

#	User	Length	Language	Date
1	Per Kampman	925	C#	2024-09-05 16:37:23
2	Laurens Fijn van Draat	961	C#	2024-09-05 16:17:43
3	Ilya	1069	C#	2024-09-05 16:18:00
4	Daniel Ledger	1124	C#	2020-10-17 13:20:09
5	Christopher Reichling	1157	C#	2024-09-05 16:37:28
6	Henning Odén	1182	C#	2019-11-08 16:14:00
7	Mihai Spătariu	1416	C#	2024-09-05 16:33:53
8	Steven Heinen	1473	C#	2024-09-05 16:26:43
9	Jacob Aufdenberg	1789	C#	2019-05-16 21:08:28
10	Eralp Karakullukcu	1796	C#	2020-04-30 17:04:46

#	User	Length	Language	Date
1	Mattia Marziali	288	C++	2025-03-09 00:10:13
2	Johan Wind	321	C++	2018-05-05 14:53:27
3	William Gan	410	C++	2018-03-11 15:16:13
4	Yeung Man Tsung	426	C++	2022-11-18 14:30:18
5	Leonardo Blanger	439	C++	2021-02-10 02:45:22
6	Daniel Fernando Santos Bustos	441	C++	2024-10-04 11:52:02
7	Ayoube Eddakhly	444	C++	2018-08-25 13:25:06
8	Hidden user	455	C++	2024-11-27 14:41:03
9	Kenny Zhang	463	C++	2023-04-22 19:23:07
10	Caeden Whitaker	468	C++	2020-12-27 06:29:42

#	User	Length	Language	Date
1	Hidden user	629	Common Lisp	2019-07-17 23:16:21

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1017	F#	2023-01-28 18:00:00

#	User	Length	Language	Date
1	Hidden user	468	Go	2021-04-04 00:09:55
2	Akhikumar Indurti	562	Go	2018-10-13 00:19:39
3	Norbert Voelker	739	Go	2021-07-25 22:28:09

#	User	Length	Language	Date
1	Ziyao Wei	287	Haskell	2020-03-08 19:27:33
2	BlackcapCoder	368	Haskell	2019-05-12 11:42:02
3	Hidden user	444	Haskell	2023-01-04 03:38:53
4	Md Akif Chowdhury	491	Haskell	2023-07-08 10:30:16
5	Agus Sentosa Hermawan	552	Haskell	2021-10-31 14:02:16
6	Steinar Simonnes	584	Haskell	2024-05-16 09:41:43
7	Brent Yorgey	853	Haskell	2018-05-04 06:25:57
8	Liam Chung	1290	Haskell	2020-11-14 05:23:24
9	Quinn Flavel	1401	Haskell	2021-01-20 00:11:43
10	Hidden user	11655	Haskell	2021-06-05 14:49:37

#	User	Length	Language	Date
1	John Hershey	468	Java	2022-11-18 22:14:42
2	Darrin Wiley	531	Java	2019-04-16 22:35:40
3	Paul Boddington	565	Java	2020-07-20 02:23:04
4	Evan Magill	567	Java	2022-11-09 17:09:58
5	Alex Coleman	587	Java	2018-10-15 20:07:38
6	Andrew Niedringhaus	653	Java	2018-10-13 00:27:31
7	Doug Goodman	656	Java	2018-03-15 21:57:28
8	Leo Wang	671	Java	2018-10-12 23:23:50
9	Kai Qu	686	Java	2018-11-20 00:26:26
10	Sam Huynh	687	Java	2021-04-19 08:29:48

#	User	Length	Language	Date
1	Peter Kedemo	616	JavaScript (Node.js)	2019-12-29 11:00:52
2	Teo Diaz	748	JavaScript (Node.js)	2021-04-08 10:21:36

#	User	Length	Language	Date
1	Jimmy Gustafsson	145	JavaScript (SpiderMonkey)	2025-07-23 23:39:23
2	Bjørn Chr. Soltvedt	340	JavaScript (SpiderMonkey)	2018-05-02 23:54:43
3	Christian Pilegaard Cederquist	589	JavaScript (SpiderMonkey)	2023-03-30 13:22:00

#	User	Length	Language	Date
1	Timothy Gaede	1094	Julia	2024-05-06 05:59:36

#	User	Length	Language	Date
1	Damien Ryan Allison	577	Kotlin	2024-04-16 18:17:52
2	Phường Lên	744	Kotlin	2020-03-28 03:04:50
3	Adam Rankin	760	Kotlin	2023-08-31 05:53:34
4	Ryan McCampbell	791	Kotlin	2018-10-13 00:04:51
5	Hidden user	843	Kotlin	2020-03-25 02:37:36
6	Neil Harmon	1335	Kotlin	2019-10-29 10:18:20

#	User	Length	Language	Date
1	Andreas Björklund	228	Python 2	2019-04-14 19:54:57
2	Thomas Feld	254	Python 2	2019-09-24 10:43:29
3	Wang Zhi Jian	271	Python 2	2019-05-11 15:42:23
4	Måns Magnusson	279	Python 2	2018-11-04 22:00:39
5	Lars Åström	310	Python 2	2018-11-01 10:08:27
6	Björn Magnusson	310	Python 2	2018-11-02 22:25:13
7	Alex Zhao	337	Python 2	2018-04-28 19:26:49
8	Maj Stenmark	343	Python 2	2019-09-15 22:22:47
9	Austin Yan	343	Python 2	2020-11-16 11:57:29
10	João Pedro Alvito	360	Python 2	2018-03-23 10:26:04

#	User	Length	Language	Date
1	Lukas Kerren	117	Python 3	2024-04-01 02:35:08
2	Benjamin Z White	138	Python 3	2023-04-23 00:22:27
3	Lawry Sorenson	143	Python 3	2023-02-18 20:43:28
4	Ahmed Chamseddine	146	Python 3	2024-09-13 16:55:54
5	Rachel Krohn	153	Python 3	2025-04-11 23:13:39
6	Jonathan Dastrup	165	Python 3	2024-08-28 20:46:50
7	Clement Oh	171	Python 3	2023-10-05 13:34:58
8	Farzam Abrishami	177	Python 3	2025-05-12 20:01:51
9	Brandon Zhang	182	Python 3	2020-05-18 03:36:40
10	Yong Mao	195	Python 3	2023-04-12 18:44:05

#	User	Length	Language	Date
1	Thomas Feld	81	Ruby	2023-03-28 14:41:32
2	Alexander Bilde Pedersen	163	Ruby	2023-05-05 18:21:20

#	User	Length	Language	Date
1	David Rasch	406	Rust	2023-09-28 12:34:31
2	Ben Heard	483	Rust	2022-10-27 00:07:35
3	Vincent Lagerros	604	Rust	2025-08-10 02:09:21
4	Chris Seager	724	Rust	2025-04-25 00:52:36
5	Bas Dirks	830	Rust	2022-01-19 14:41:34

Solution running time distribution