Problem A
Square Peg in a Round Hole — Problem Statistics

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Submissions	5303
Accepted submissions	1725
Submission ratio	32.53%
Authors	1649
Full solves [?]	1478
Full solve Ratio	89.63%

#	User	Runtime	Language	Date
1	Øyvind Skaar	0.02 s	C#	2017-04-22 13:59:39
2	Mike Garrett	0.02 s	C#	2019-03-28 16:52:38
3	DaddyElon	0.02 s	C#	2021-09-30 04:01:00
4	Alyssa Johnson	0.02 s	C#	2021-10-18 06:16:16
5	Alex Cespedes	0.02 s	C#	2021-10-18 22:22:19
6	A A	0.02 s	C#	2021-10-19 21:47:47
7	Clarence Park	0.02 s	C#	2021-10-22 04:50:36
8	DTW	0.02 s	C#	2022-10-20 17:33:18
9	Devin White	0.02 s	C#	2022-10-20 23:40:09
10	Samuel Jefferis	0.03 s	C#	2020-10-23 03:55:20

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.06 s	F#	2023-04-29 20:01:23

#	User	Runtime	Language	Date
1	Norbert Voelker	0.08 s	Go	2021-08-29 16:45:38

#	User	Runtime	Language	Date
1	Morten Lohne	0.00 s	Haskell	2017-04-22 12:19:29
2	Brent Yorgey	0.00 s	Haskell	2017-11-23 05:02:43
3	Steinar Simonnes	0.00 s	Haskell	2025-01-13 08:39:23
4	Antony Lee	0.01 s	Haskell	2017-07-28 10:33:30
5	Olle Eriksson	0.01 s	Haskell	2018-09-15 22:48:57
6	Patrick Losique	0.01 s	Haskell	2021-01-16 23:58:20

#	User	Runtime	Language	Date
1	Ralf Erik	0.04 s	Java	2025-06-12 22:41:09
2	Santiago Rivas	0.04 s	Java	2025-08-29 18:38:06
3	Per Odlo	0.05 s	Java	2017-04-22 11:59:24
4	Martin Wiberg Petersen	0.05 s	Java	2017-04-23 10:50:22
5	Micah Stairs	0.05 s	Java	2017-04-26 03:57:51
6	Martijn Muijsers	0.05 s	Java	2017-04-28 19:17:00
7	Aldo Chow	0.05 s	Java	2017-05-28 07:00:29
8	Bjørn Dons	0.05 s	Java	2018-12-05 18:13:07
9	Peeyush Majgawali	0.05 s	Java	2025-01-01 15:29:12
10	Fredrik Lygre Bergesen	0.06 s	Java	2017-04-22 11:51:22

#	User	Runtime	Language	Date
1	Juthi Sarker Aka	0.05 s	JavaScript (Node.js)	2024-04-28 01:58:33

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2017-04-22 15:50:00
2	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-05-25 16:46:36

#	User	Runtime	Language	Date
1	Timothy Gaede	0.90 s	Julia	2024-04-12 21:08:51

#	User	Runtime	Language	Date
1	Hidden user	0.16 s	Kotlin	2020-03-21 09:50:13
2	Jacob Huebner	0.17 s	Kotlin	2020-03-05 12:36:04
3	Min-Zheng Shieh	0.21 s	Kotlin	2022-05-03 09:43:06
4	Adam Rankin	0.21 s	Kotlin	2023-09-02 06:02:28
5	Aniket Kumar	0.22 s	Kotlin	2024-04-24 00:25:50
6	Ali M. Nekoh	0.23 s	Kotlin	2025-05-07 16:27:05
7	Phường Lên	0.24 s	Kotlin	2019-11-28 16:57:30

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2017-08-08 16:39:06

#	User	Runtime	Language	Date
1	Asger Hautop Drewsen	0.02 s	Python 2	2017-04-22 11:43:09
2	Knut Aron Fludal	0.02 s	Python 2	2017-04-22 11:55:08
3	Morten Eskildsen	0.02 s	Python 2	2017-04-22 13:23:41
4	Marius Thoresen	0.02 s	Python 2	2017-04-22 13:32:16
5	Svend Christian Svendsen	0.02 s	Python 2	2017-04-22 18:37:37
6	Christofer Ohlsson	0.02 s	Python 2	2017-04-23 21:53:58
7	Matias Frank Jensen	0.02 s	Python 2	2017-04-24 11:49:21
8	Jason Pham	0.02 s	Python 2	2017-05-28 09:00:13
9	Rafael Kiesel	0.02 s	Python 2	2017-05-30 19:58:51
10	Taiqi He	0.02 s	Python 2	2017-10-07 04:12:27

#	User	Runtime	Language	Date
1	Torstein Strømme	0.02 s	Python 3	2017-04-22 11:24:41
2	Mathias Rav	0.02 s	Python 3	2017-04-22 13:02:40
3	Tore Norderud	0.02 s	Python 3	2017-04-22 13:23:04
4	Lionel KITIHOUN	0.02 s	Python 3	2017-04-22 13:38:19
5	Martin Mellum Jackson	0.02 s	Python 3	2017-04-22 15:23:12
6	Martin Jackson	0.02 s	Python 3	2017-04-22 20:17:55
7	Nick Bakkegaard	0.02 s	Python 3	2017-04-22 21:35:28
8	Oskar Haarklou Veileborg	0.02 s	Python 3	2017-04-23 18:58:13
9	Ciara Godwin	0.02 s	Python 3	2017-06-28 16:48:49
10	Patrik Lilja	0.02 s	Python 3	2017-07-02 09:26:54

#	User	Runtime	Language	Date
1	John Bowers	0.03 s	Ruby	2018-03-28 03:03:26
2	Yusuke Ichiki	0.05 s	Ruby	2022-05-10 07:17:44
3	Thomas Feld	0.06 s	Ruby	2023-05-04 09:00:23

#	User	Runtime	Language	Date
1	David Rasch	0.00 s	Rust	2020-10-02 11:54:15
2	Muhammad Rais Fathin Mudzakir	0.00 s	Rust	2021-05-13 08:56:58
3	Bas Dirks	0.00 s	Rust	2022-01-19 20:22:02
4	poppyer	0.00 s	Rust	2022-05-05 04:48:06
5	Artur Khuziakhmetov	0.00 s	Rust	2022-07-23 11:25:34
6	Ryosuke Takahashi	0.00 s	Rust	2023-05-03 10:32:21
7	Iwancof	0.00 s	Rust	2023-05-07 15:30:18
8	藤原潮人	0.00 s	Rust	2023-05-09 09:52:34
9	Vincent Lagerros	0.00 s	Rust	2024-11-17 16:26:19
10	Mckinley Xie	0.00 s	Rust	2025-04-29 22:52:52

#	User	Length	Language	Date
1	Olav Røthe Bakken	810	C	2017-04-22 12:25:57
2	Raymond Yang	939	C	2021-06-16 18:19:22
3	Hidden user	1043	C	2020-08-06 13:25:54
4	Jack Gurdin	1181	C	2022-12-02 03:57:44
5	Yk	1229	C	2022-05-11 03:18:29
6	taichi	1484	C	2023-05-07 22:08:59
7	Josiah Tripp	1738	C	2024-09-03 15:37:29
8	Sambit Palit	2058	C	2020-11-13 19:11:35
9	Komatsuna	2391	C	2022-05-13 16:50:23
10	Leon Kennedy	3204	C	2017-07-31 16:29:58

#	User	Length	Language	Date
1	Kasper Elbo	1267	C#	2024-02-23 13:24:35
2	Mike Garrett	1327	C#	2019-03-28 16:52:38
3	Hidden user	1380	C#	2021-10-12 09:52:51
4	Samuel Jefferis	1500	C#	2020-10-23 03:55:20
5	Alex Cespedes	1739	C#	2021-10-18 22:22:19
6	Øyvind Skaar	1884	C#	2017-04-22 13:59:39
7	Jingwen Zhang	2477	C#	2021-10-20 04:38:19
8	Alyssa Johnson	2853	C#	2021-10-18 06:16:16
9	Clarence Park	2918	C#	2021-10-22 04:52:22
10	Devin White	2967	C#	2022-10-27 00:28:40

#	User	Length	Language	Date
1	Mugeon Kim	440	C++	2024-05-24 03:19:01
2	Đoàn Công Chính	442	C++	2018-01-20 16:45:10
3	Frederick Pek	459	C++	2021-05-24 12:03:46
4	Gerth Stølting Brodal	495	C++	2017-04-22 21:25:47
5	Chris Vilches	501	C++	2024-11-12 14:39:51
6	Yeung Man Tsung	509	C++	2022-12-31 16:01:21
7	Gabriel Hofer	519	C++	2020-12-15 21:45:44
8	Hoàng Bá Tuân	528	C++	2018-01-20 16:00:48
9	周奇霖	533	C++	2023-05-12 09:23:35
10	Atli Fannar Franklín	539	C++	2020-05-06 00:09:16

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1053	F#	2023-04-29 20:01:23

#	User	Length	Language	Date
1	Norbert Voelker	1085	Go	2021-08-29 16:45:38

#	User	Length	Language	Date
1	Olle Eriksson	514	Haskell	2018-09-15 22:48:57
2	Brent Yorgey	665	Haskell	2017-11-23 05:02:43
3	Patrick Losique	756	Haskell	2021-01-16 23:58:20
4	Antony Lee	760	Haskell	2017-07-28 10:33:30
5	Morten Lohne	883	Haskell	2017-04-22 12:19:29
6	Steinar Simonnes	971	Haskell	2025-01-13 08:39:43

#	User	Length	Language	Date
1	Eric Leow Yu Quan	761	Java	2021-01-04 05:40:06
2	Jon Marius Venstad	801	Java	2023-03-17 13:39:48
3	Ada Clevinger	807	Java	2018-06-05 21:53:56
4	Marshall D Feng	827	Java	2022-03-28 02:43:03
5	Francesco Fantin	852	Java	2022-10-25 16:48:02
6	Hylene Jules Lee	928	Java	2020-12-10 11:29:46
7	Roger Ballard	948	Java	2017-09-24 19:14:55
8	Crystal Yang	956	Java	2023-01-06 04:16:34
9	Ivan Dario	979	Java	2017-09-24 19:44:07
10	Will Li	980	Java	2022-10-19 03:11:39

#	User	Length	Language	Date
1	Juthi Sarker Aka	2712	JavaScript (Node.js)	2024-04-28 01:58:33

#	User	Length	Language	Date
1	Bjørn Chr. Soltvedt	448	JavaScript (SpiderMonkey)	2017-04-22 15:50:00
2	Christian Pilegaard Cederquist	533	JavaScript (SpiderMonkey)	2023-05-25 16:46:36

#	User	Length	Language	Date
1	Timothy Gaede	1097	Julia	2024-04-12 21:08:51

#	User	Length	Language	Date
1	Min-Zheng Shieh	584	Kotlin	2022-05-03 09:43:06
2	Phường Lên	668	Kotlin	2019-11-28 16:57:30
3	Aniket Kumar	743	Kotlin	2024-04-24 00:25:50
4	Jacob Huebner	762	Kotlin	2020-03-05 12:36:04
5	Adam Rankin	921	Kotlin	2023-09-02 06:02:28
6	Ali M. Nekoh	1003	Kotlin	2025-05-07 16:27:05
7	Hidden user	1202	Kotlin	2020-03-21 09:50:13

#	User	Length	Language	Date
1	Ingemar Ragnemalm	2810	Pascal	2017-08-08 16:39:06

#	User	Length	Language	Date
1	Thomas Feld	257	Python 2	2019-12-09 14:15:38
2	Jesper Öqvist	351	Python 2	2018-11-10 21:15:52
3	Fatima Afzali	360	Python 2	2019-01-19 19:49:28
4	Kasper Borys	399	Python 2	2017-09-28 03:40:57
5	Andreas Björklund	413	Python 2	2019-05-13 21:02:48
6	Guan Yang Ze	455	Python 2	2019-09-24 18:53:53
7	Knut Aron Fludal	459	Python 2	2017-04-22 11:55:08
8	Asger Hautop Drewsen	460	Python 2	2017-04-22 11:43:09
9	Svend Christian Svendsen	460	Python 2	2017-04-22 18:37:37
10	Matias Frank Jensen	460	Python 2	2017-04-24 11:49:21

#	User	Length	Language	Date
1	Charles Ancheta	170	Python 3	2023-04-13 02:43:21
2	Benjamin Z White	191	Python 3	2023-04-13 22:20:18
3	Ahmed Chamseddine	246	Python 3	2025-05-01 09:43:14
4	Yong Mao	263	Python 3	2022-11-01 03:09:47
5	Bryan Juniano	297	Python 3	2025-05-02 17:32:25
6	Thore Husfeldt	303	Python 3	2022-05-06 17:19:43
7	Teikn Smith	306	Python 3	2022-07-05 23:29:14
8	Jason Cannon	315	Python 3	2020-01-07 17:52:08
9	Long Peter	321	Python 3	2023-10-12 09:56:58
10	Kelly Dance	329	Python 3	2022-08-28 05:46:28

#	User	Length	Language	Date
1	Thomas Feld	125	Ruby	2023-05-04 09:00:23
2	Yusuke Ichiki	589	Ruby	2022-05-10 07:17:44
3	John Bowers	612	Ruby	2018-03-28 03:03:26

#	User	Length	Language	Date
1	poppyer	800	Rust	2022-05-05 04:48:06
2	Artur Khuziakhmetov	1037	Rust	2022-07-23 11:25:34
3	藤原潮人	1219	Rust	2023-05-09 09:52:34
4	Bas Dirks	1265	Rust	2022-01-19 20:22:02
5	David Rasch	1541	Rust	2020-10-02 11:54:15
6	Mckinley Xie	1729	Rust	2025-04-29 22:52:52
7	Ryosuke Takahashi	3036	Rust	2023-05-03 10:32:21
8	Muhammad Rais Fathin Mudzakir	4376	Rust	2021-05-13 08:56:58
9	Vincent Lagerros	17353	Rust	2024-11-17 16:26:19
10	Iwancof	41892	Rust	2023-05-07 15:30:18

Solution running time distribution