Problem A
Square Peg — Problem Statistics

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Submissions	2914
Accepted submissions	1546
Submission ratio	53.05%
Authors	1387
Full solves [?]	1308
Full solve Ratio	94.30%

#	User	Runtime	Language	Date
1	Michael Wichlinski	0.00 s	Ada	2025-03-26 18:27:53

#	User	Runtime	Language	Date
1	Matzuka	0.01 s	APL	2025-03-30 10:37:35

#	User	Runtime	Language	Date
1	Frans Meulenbroeks	0.01 s	Bash	2025-02-18 13:24:23
2	Chenzhang Hu	0.07 s	Bash	2023-12-27 16:41:45

#	User	Runtime	Language	Date
1	Mikael Fiala-Lundström	0.02 s	C#	2022-02-12 17:13:11
2	Sardar Parvinder Singh	0.02 s	C#	2022-02-16 20:26:40
3	Henrik Hallbert	0.02 s	C#	2022-02-16 21:05:06
4	Göran Andersson	0.02 s	C#	2022-05-08 02:22:48
5	Eric Weiss	0.02 s	C#	2022-05-09 16:48:19
6	Cecilia Sjögren	0.02 s	C#	2022-05-11 14:35:12
7	Владимир Хилько	0.02 s	C#	2022-05-12 16:42:55
8	Victor Hultén Mattsson	0.02 s	C#	2022-06-11 12:24:15
9	Yuwono Bangun Nagoro	0.02 s	C#	2022-09-09 19:30:52
10	Joseph Emiliano Arias Limas	0.02 s	C#	2022-11-18 00:30:40

#	User	Runtime	Language	Date
1	Sarek Høverstad Skotåm	0.00 s	COBOL	2022-02-17 19:31:42

#	User	Runtime	Language	Date
1	Leander West Furumo	0.01 s	Common Lisp	2022-02-17 19:54:23

#	User	Runtime	Language	Date
1	dick move	0.00 s	Crystal	2025-10-29 04:51:58

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.03 s	F#	2022-07-12 15:42:52

#	User	Runtime	Language	Date
1	Jimmy Nejtron	0.00 s	Go	2023-09-19 08:49:43
2	Norbert Voelker	0.08 s	Go	2022-02-12 19:27:14
3	Sergey Jakobsen	0.08 s	Go	2022-02-16 15:24:21
4	arda atci	0.08 s	Go	2022-02-16 21:33:42

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Haskell	2022-06-09 23:36:15
2	Ng Tek In	0.00 s	Haskell	2022-08-09 06:04:01
3	Jan Hrček	0.00 s	Haskell	2022-09-04 10:02:53
4	Sebastian Banert	0.00 s	Haskell	2023-09-12 22:18:36
5	Charley Sheaffer	0.00 s	Haskell	2023-10-31 21:25:55
6	David Zacek	0.01 s	Haskell	2022-02-12 17:11:12
7	Brent Yorgey	0.01 s	Haskell	2022-02-17 03:50:01
8	Hidden user	0.01 s	Haskell	2022-11-22 03:29:58
9	Steinar Simonnes	0.01 s	Haskell	2024-01-21 13:26:16
10	Greg Rosser	0.01 s	Haskell	2024-02-25 10:09:46

#	User	Runtime	Language	Date
1	Goh Zhixuan Jeremiah	0.04 s	Java	2025-02-08 07:16:45
2	Lamia Varawala	0.05 s	Java	2024-03-30 16:54:43
3	Lee Heng Sheng	0.05 s	Java	2024-04-27 15:28:10
4	Ku Brian	0.05 s	Java	2024-05-04 06:13:35
5	Terry Morris	0.05 s	Java	2024-07-05 00:47:35
6	Markus Bao	0.05 s	Java	2025-09-11 06:06:46
7	WeiWei Luo	0.06 s	Java	2021-11-27 20:29:06
8	Stela Palii	0.06 s	Java	2022-02-14 06:05:09
9	Jack Le	0.06 s	Java	2022-02-16 20:33:42
10	Sven Rönnbäck	0.06 s	Java	2022-02-18 16:23:04

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	JavaScript (Node.js)	2024-09-05 23:05:03
2	Linus Strömberg	0.05 s	JavaScript (Node.js)	2023-11-14 11:33:22
3	Klemen Randl	0.08 s	JavaScript (Node.js)	2022-07-10 13:27:03
4	John	0.08 s	JavaScript (Node.js)	2022-07-15 09:50:53
5	Vu Van Dung	0.09 s	JavaScript (Node.js)	2022-09-15 10:04:41
6	Benjamin Robillard	0.41 s	JavaScript (Node.js)	2022-03-28 17:17:10
7	Chris Wong	0.42 s	JavaScript (Node.js)	2022-03-15 16:45:54
8	Andrei James Drice	0.42 s	JavaScript (Node.js)	2022-04-03 10:41:48
9	Niamh Limerick	0.42 s	JavaScript (Node.js)	2022-04-12 16:22:27

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2022-02-18 17:47:34
2	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2022-12-31 09:55:39
3	Nicklas Utgaard	0.02 s	JavaScript (SpiderMonkey)	2023-01-01 19:47:29
4	Evan Magill	0.02 s	JavaScript (SpiderMonkey)	2024-04-20 08:15:12
5	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2024-06-13 00:21:13
6	CMP - Sullivan Sherwood	0.02 s	JavaScript (SpiderMonkey)	2024-12-11 19:13:28
7	Zach Tschetter	0.02 s	JavaScript (SpiderMonkey)	2025-02-01 02:04:38

#	User	Runtime	Language	Date
1	Danny Robinson	0.51 s	Julia	2023-09-01 03:07:22
2	Timothy Gaede	0.53 s	Julia	2024-03-24 07:51:20

#	User	Runtime	Language	Date
1	Troy Warmboe	0.18 s	Kotlin	2023-04-11 01:46:12
2	Emil Wihlander	0.18 s	Kotlin	2023-07-25 22:04:42
3	Troels Bjerre Lund	0.19 s	Kotlin	2022-03-29 16:14:59
4	Adam Rankin	0.20 s	Kotlin	2023-04-24 17:45:11
5	Zaw Myat	0.20 s	Kotlin	2024-02-02 21:23:18
6	Martijn Muijsers	0.20 s	Kotlin	2024-05-31 11:32:28
7	Karl Johan Heimark	0.22 s	Kotlin	2024-12-04 20:07:50

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Odin	2025-05-20 04:12:38

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2022-02-22 13:14:58
2	David Connolly	0.00 s	Pascal	2022-04-20 18:20:50

#	User	Runtime	Language	Date
1	Muhammad Asyraf bin Akop	0.01 s	PHP	2022-05-12 10:51:14
2	Renate	0.01 s	PHP	2022-07-26 00:53:28
3	Andre Wahyudi	0.01 s	PHP	2022-10-21 10:02:53

#	User	Runtime	Language	Date
1	Hakan Kjellerstrand	0.02 s	Prolog	2023-02-06 07:42:02

#	User	Runtime	Language	Date
1	Hasan Kalzi	0.02 s	Python 2	2022-06-20 13:08:01
2	Shuhaib Mehri	0.03 s	Python 2	2021-11-27 21:06:05
3	Andreas Björklund	0.03 s	Python 2	2022-03-10 07:10:56
4	Johan Lyts	0.03 s	Python 2	2022-03-10 21:48:16
5	Yanmarshus Bachtiar	0.03 s	Python 2	2022-03-12 13:19:38
6	Sivasankaran D	0.07 s	Python 2	2025-08-03 11:27:36
7	KALAJAYANTHI M	0.07 s	Python 2	2025-10-03 06:52:02

#	User	Runtime	Language	Date
1	Jason Tomkins	0.04 s	Python 3	2022-06-08 08:42:46
2	Hasan Kalzi	0.04 s	Python 3	2022-06-20 13:07:22
3	Федор Федотов	0.04 s	Python 3	2022-06-22 03:42:14
4	Maximus Chin	0.04 s	Python 3	2022-06-22 05:44:14
5	Dheepthi Mohanraj	0.04 s	Python 3	2022-06-24 02:43:39
6	Elias Lundell	0.04 s	Python 3	2022-07-01 15:39:36
7	Tobias Glimmerfors	0.04 s	Python 3	2022-07-01 15:50:24
8	Alexander Grooms	0.04 s	Python 3	2022-07-03 20:30:44
9	Kenneth Jensen	0.04 s	Python 3	2022-07-04 16:57:39
10	Suus Brommer	0.04 s	Python 3	2022-07-04 17:42:48

#	User	Runtime	Language	Date
1	Hidden user	0.05 s	Ruby	2022-02-13 09:46:40
2	Thomas Feld	0.06 s	Ruby	2022-11-08 12:32:38
3	Christian Pilegaard Cederquist	0.06 s	Ruby	2022-12-31 10:19:28
4	Eugen Neagoe	0.06 s	Ruby	2023-06-09 16:00:17
5	Clement Oh	0.06 s	Ruby	2023-10-31 07:04:54
6	Chenzhang Hu	0.12 s	Ruby	2025-09-22 15:49:46

#	User	Length	Language	Date
1	Michael Wichlinski	823	Ada	2025-03-26 18:27:53

#	User	Length	Language	Date
1	Matzuka	46	APL	2025-03-30 10:48:34

#	User	Length	Language	Date
1	Chenzhang Hu	43	Bash	2025-09-13 00:59:31
2	Frans Meulenbroeks	48	Bash	2025-02-18 13:24:23

#	User	Length	Language	Date
1	Melker Widén	60	C	2024-06-16 15:03:50
2	Hidden user	62	C	2024-06-16 15:11:46
3	Martin Blom	90	C	2023-12-21 00:07:37
4	Andrew Roberts	143	C	2022-05-15 22:25:06
5	Mikael K Eriksson	160	C	2022-02-12 22:46:01
6	Mai Nam Nguyen	163	C	2023-10-17 21:46:26
7	James Christian Ruiz	172	C	2022-12-22 11:33:32
8	Allan Nouri	172	C	2023-11-14 09:52:38
9	Matthew Weston	175	C	2022-02-16 19:55:13
10	Aleksandr Khindanov	182	C	2023-10-29 02:25:02

#	User	Length	Language	Date
1	traxex	203	C#	2024-05-15 13:47:28
2	Deci Bel	241	C#	2025-04-05 23:22:49
3	Anthony Ye	272	C#	2023-12-03 18:45:53
4	Esty Crow	323	C#	2023-12-03 06:51:26
5	Владимир Хилько	328	C#	2022-05-12 16:42:55
6	Benjamin Bilbeau	395	C#	2023-12-12 17:25:38
7	Գոռ Բաղդասարյան	399	C#	2025-02-26 07:03:21
8	Gustav Junedahl	405	C#	2022-04-24 10:26:43
9	Patrick Ward	411	C#	2024-02-23 13:09:32
10	Henrik Hallbert	412	C#	2022-02-16 21:05:06

#	User	Length	Language	Date
1	Jonas Rouven Schoenauer	103	C++	2023-10-24 02:23:56
2	Way Tan	141	C++	2022-10-09 14:13:44
3	Wen Hao	142	C++	2022-11-02 03:48:26
4	vagabundus	143	C++	2022-05-05 00:03:53
5	Eric Yang	144	C++	2023-11-25 19:04:56
6	人外沙耶	145	C++	2023-01-13 08:31:37
7	Javier del Río	147	C++	2023-08-16 17:53:13
8	Vladyslav Reznikov	149	C++	2022-11-19 15:21:54
9	Bui Phuong Nam	150	C++	16:38:35
10	Đậu Huy Minh	151	C++	2022-10-10 11:21:33

#	User	Length	Language	Date
1	Sarek Høverstad Skotåm	724	COBOL	2022-02-17 19:31:42

#	User	Length	Language	Date
1	Leander West Furumo	126	Common Lisp	2022-02-17 19:54:23

#	User	Length	Language	Date
1	dick move	70	Crystal	2025-10-29 04:51:58

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	136	F#	2022-07-12 15:42:52

#	User	Length	Language	Date
1	Jimmy Nejtron	167	Go	2023-09-19 08:49:43
2	Sergey Jakobsen	209	Go	2022-02-16 15:24:21
3	arda atci	233	Go	2022-02-16 21:33:42
4	Norbert Voelker	457	Go	2022-02-12 19:27:14

#	User	Length	Language	Date
1	Sebastian Banert	125	Haskell	2023-09-12 22:18:36
2	Steinar Simonnes	147	Haskell	2024-01-21 13:26:16
3	Charley Sheaffer	222	Haskell	2023-10-31 21:25:55
4	Hidden user	228	Haskell	2022-11-22 03:29:58
5	David Zacek	232	Haskell	2022-02-12 17:11:12
6	Brent Yorgey	279	Haskell	2022-02-17 03:50:01
7	Jan Hrček	289	Haskell	2022-09-04 10:02:53
8	Ng Tek In	338	Haskell	2022-08-09 06:04:01
9	Greg Rosser	364	Haskell	2024-02-25 10:09:46
10	Hidden user	693	Haskell	2022-06-09 23:36:15

#	User	Length	Language	Date
1	Jason Liu	238	Java	2023-05-28 02:43:18
2	Aidan Briggs	255	Java	2022-02-24 15:56:22
3	Thomas Anung Basuki	260	Java	2025-07-03 07:55:34
4	Brennan Cleland	277	Java	2022-10-05 05:04:10
5	Andreas Guldborg Hansen	282	Java	2022-05-06 16:31:41
6	Thomas King	286	Java	2024-06-28 18:45:51
7	Henry Fong	292	Java	2022-10-25 01:05:49
8	Carter Henderson	297	Java	2022-02-23 18:07:39
9	PAVISH V	302	Java	2025-04-09 12:44:44
10	Leslie Yip	306	Java	2022-08-01 17:29:22

#	User	Length	Language	Date
1	Linus Strömberg	341	JavaScript (Node.js)	2023-11-14 11:33:22
2	Vu Van Dung	347	JavaScript (Node.js)	2022-09-15 10:04:41
3	Hidden user	485	JavaScript (Node.js)	2023-08-06 19:08:44
4	Chris Wong	563	JavaScript (Node.js)	2022-03-15 16:45:54
5	Andrei James Drice	601	JavaScript (Node.js)	2022-04-03 10:41:48
6	John	606	JavaScript (Node.js)	2022-07-15 09:50:53
7	Benjamin Robillard	806	JavaScript (Node.js)	2022-03-28 17:17:10
8	Niamh Limerick	831	JavaScript (Node.js)	2022-04-12 16:22:27
9	Klemen Randl	874	JavaScript (Node.js)	2022-07-10 13:27:03

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	55	JavaScript (SpiderMonkey)	2022-12-31 10:13:02
2	Jimmy Gustafsson	58	JavaScript (SpiderMonkey)	2024-06-13 00:22:22
3	Evan Magill	85	JavaScript (SpiderMonkey)	2024-04-20 08:15:12
4	Zach Tschetter	94	JavaScript (SpiderMonkey)	2025-02-01 02:04:38
5	Bjørn Chr. Soltvedt	98	JavaScript (SpiderMonkey)	2022-02-18 18:01:31
6	CMP - Sullivan Sherwood	223	JavaScript (SpiderMonkey)	2024-12-11 19:13:28
7	Nicklas Utgaard	408	JavaScript (SpiderMonkey)	2023-01-01 19:47:29

#	User	Length	Language	Date
1	Danny Robinson	68	Julia	2023-09-01 03:07:22
2	Timothy Gaede	170	Julia	2024-03-24 07:51:20

#	User	Length	Language	Date
1	Troels Bjerre Lund	125	Kotlin	2022-03-29 16:14:59
2	Karl Johan Heimark	214	Kotlin	2024-12-04 20:07:50
3	Emil Wihlander	257	Kotlin	2023-07-25 22:04:42
4	Troy Warmboe	284	Kotlin	2023-04-11 01:46:12
5	Zaw Myat	289	Kotlin	2024-02-02 21:23:18
6	Martijn Muijsers	554	Kotlin	2024-05-31 11:32:28
7	Adam Rankin	564	Kotlin	2023-04-24 17:45:11

#	User	Length	Language	Date
1	Hidden user	431	Odin	2025-05-20 04:12:38

#	User	Length	Language	Date
1	Ingemar Ragnemalm	139	Pascal	2022-02-22 13:14:58
2	David Connolly	183	Pascal	2022-04-20 18:20:50

#	User	Length	Language	Date
1	Renate	99	PHP	2022-07-26 00:53:28
2	Muhammad Asyraf bin Akop	168	PHP	2022-05-12 10:51:14
3	Andre Wahyudi	630	PHP	2022-10-21 10:02:53

#	User	Length	Language	Date
1	Hakan Kjellerstrand	61	Prolog	2023-03-17 11:07:06

#	User	Length	Language	Date
1	KALAJAYANTHI M	97	Python 2	2025-10-03 06:52:02
2	Andreas Björklund	99	Python 2	2022-03-10 07:10:56
3	Yanmarshus Bachtiar	101	Python 2	2022-03-12 13:19:38
4	Sivasankaran D	118	Python 2	2025-08-03 11:27:36
5	Johan Lyts	120	Python 2	2022-03-10 21:48:16
6	Shuhaib Mehri	133	Python 2	2021-11-27 21:06:05
7	Hasan Kalzi	289	Python 2	2022-03-06 18:32:35

#	User	Length	Language	Date
1	Michael Yu	55	Python 3	2022-11-21 23:36:13
2	Melker Widén	55	Python 3	2023-12-11 01:44:07
3	Mikael Häglund	56	Python 3	2022-11-21 00:34:15
4	Kevin Gomez	57	Python 3	2023-08-30 00:26:04
5	Harry Zhang	59	Python 3	2022-11-21 21:15:01
6	Adam Levav	60	Python 3	2023-01-25 01:05:34
7	Shashank Bhatt	60	Python 3	2023-03-16 03:55:56
8	Charles Ancheta	60	Python 3	2023-03-28 08:50:27
9	Benjamin Z White	60	Python 3	2023-04-14 19:48:39
10	Clement Oh	60	Python 3	2023-05-13 17:16:32

#	User	Length	Language	Date
1	Thomas Feld	45	Ruby	2023-01-02 09:12:53
2	Christian Pilegaard Cederquist	47	Ruby	2023-01-02 09:21:20
3	Hidden user	62	Ruby	2022-02-13 09:46:40
4	Clement Oh	70	Ruby	2023-10-31 07:04:54
5	Eugen Neagoe	97	Ruby	2023-06-09 16:00:17
6	Chenzhang Hu	141	Ruby	2025-09-22 15:49:46

#	User	Length	Language	Date
1	Emil Dichmann	287	Rust	2025-09-11 09:20:54
2	Vincent Lagerros	340	Rust	2025-01-27 10:20:27
3	David Rasch	363	Rust	2022-09-21 16:40:09
4	Pankajkumar Patro	368	Rust	2024-10-24 15:20:49
5	Nathaniel Risum	370	Rust	2025-05-26 17:28:44
6	Isak Jägberg	470	Rust	2023-03-18 13:05:06
7	Hamza Mohd Zubair	506	Rust	2022-05-11 12:55:04
8	Bas Dirks	549	Rust	2022-02-12 23:50:02
9	Ryan Mueller	562	Rust	2023-10-27 14:53:01
10	Kunwei Zhang	1010	Rust	2022-12-12 01:19:52

Solution running time distribution