Problem A
Musical Scales — Problem Statistics

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Submissions	2776
Accepted submissions	1685
Submission ratio	60.70%
Authors	1614
Full solves [?]	1526
Full solve Ratio	94.55%

#	User	Runtime	Language	Date
1	Kunwei Zhang	0.02 s	C#	2018-06-09 07:30:59
2	Balder Sandstrøm	0.02 s	C#	2018-09-29 01:23:20
3	Csaba Varga	0.02 s	C#	2019-02-22 19:21:59
4	Fredrik Stigsson	0.02 s	C#	2019-05-23 08:36:59
5	Georgios Leandros Kyriazis	0.03 s	C#	2020-12-12 19:05:09
6	Göran Andersson	0.03 s	C#	2022-05-11 17:44:56
7	Sano Gharzani	0.03 s	C#	2023-03-20 00:13:03
8	Mikael Fiala-Lundström	0.04 s	C#	2021-04-13 00:23:23
9	Ben-Richard Ebbesvik	0.04 s	C#	2023-12-29 00:00:22
10	Kayla Moorcroft	0.05 s	C#	2023-05-28 18:56:17

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	Common Lisp	2019-07-21 05:54:47
2	David Cawthon	0.02 s	Common Lisp	2019-06-09 02:33:51

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.05 s	F#	2022-08-01 19:41:04
2	Patrick Bahr	0.06 s	F#	2021-02-21 21:37:10

#	User	Runtime	Language	Date
1	Michael Blunt	0.00 s	Go	2025-08-19 00:58:32
2	Norbert Voelker	0.08 s	Go	2021-04-14 23:18:18

#	User	Runtime	Language	Date
1	Brent Yorgey	0.00 s	Haskell	2017-10-15 04:55:43
2	Matthew Johnson	0.00 s	Haskell	2018-02-28 07:53:45
3	Stefan Kennedy	0.00 s	Haskell	2018-05-11 04:02:07
4	Jonathan Goodman	0.00 s	Haskell	2018-05-25 23:54:23
5	Daniel German	0.00 s	Haskell	2018-06-29 02:10:39
6	Steinar Simonnes	0.00 s	Haskell	2024-01-31 16:57:59
7	Sebastian Banert	0.00 s	Haskell	2024-07-07 19:12:11
8	Ola Berglund	0.00 s	Haskell	2024-10-19 11:14:19
9	Håkon Flatval	0.01 s	Haskell	2018-08-20 00:00:12
10	Hidden user	0.01 s	Haskell	2019-08-14 15:21:25

#	User	Runtime	Language	Date
1	Nathaniel Lahn	0.05 s	Java	2017-10-14 20:38:14
2	Javier Ojeda	0.05 s	Java	2017-10-14 20:39:07
3	Alex Lind	0.05 s	Java	2017-10-14 20:58:08
4	Daniel Moyer	0.05 s	Java	2017-10-14 20:58:12
5	Aldo Chow	0.05 s	Java	2017-10-14 21:03:23
6	Alyssa Herbst	0.05 s	Java	2017-10-14 21:06:30
7	Finn Lidbetter	0.05 s	Java	2017-10-14 21:09:23
8	Christy Coghlan	0.05 s	Java	2017-10-14 21:17:49
9	Ariana Herbst	0.05 s	Java	2017-10-14 21:55:46
10	Blake Mealey	0.05 s	Java	2017-10-14 21:56:28

#	User	Runtime	Language	Date
1	Carl Sundvall	0.05 s	JavaScript (Node.js)	2018-11-16 14:05:17
2	asterisk man	0.08 s	JavaScript (Node.js)	2023-04-29 22:16:43
3	Nick Ivanov	0.41 s	JavaScript (Node.js)	2020-03-13 15:06:05
4	John	0.42 s	JavaScript (Node.js)	2020-07-27 09:51:45
5	Andoko Chandra	0.42 s	JavaScript (Node.js)	2020-10-03 20:55:11
6	Chris Wong	0.42 s	JavaScript (Node.js)	2021-02-07 01:13:56

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2017-10-16 04:44:36
2	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2017-10-23 00:10:25
3	Christian Cederquist	0.02 s	JavaScript (SpiderMonkey)	2022-11-15 13:27:50
4	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2024-07-08 22:26:52
5	Andrea Bianchessi	0.03 s	JavaScript (SpiderMonkey)	2018-08-27 18:08:56
6	Peter Menyes	0.03 s	JavaScript (SpiderMonkey)	2021-02-11 22:34:20

#	User	Runtime	Language	Date
1	Timothy Gaede	0.73 s	Julia	2024-05-12 10:53:08
2	Danny Robinson	0.76 s	Julia	2023-09-05 20:09:29

#	User	Runtime	Language	Date
1	Hidden user	0.21 s	Kotlin	2017-12-05 14:42:43
2	Sarek Høverstad Skotåm	0.21 s	Kotlin	2020-10-10 19:32:00
3	Neil Harmon	0.22 s	Kotlin	2019-04-09 15:48:24
4	Troy Warmboe	0.24 s	Kotlin	2020-02-06 22:57:54

#	User	Runtime	Language	Date
1	Brandon Tang	0.00 s	OCaml	2023-07-17 05:28:06
2	Gabriella Gloria	0.00 s	OCaml	2025-05-07 18:20:23

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2017-11-24 23:01:04

#	User	Runtime	Language	Date
1	Jonas Lindenskov Nielsen	0.01 s	PHP	2019-10-10 10:04:13
2	Renate	0.01 s	PHP	2022-07-25 01:26:43
3	Andre Wahyudi	0.01 s	PHP	2022-11-16 05:19:19

#	User	Runtime	Language	Date
1	Godmar Back	0.02 s	Python 2	2017-10-14 20:07:44
2	Haochen Chen	0.02 s	Python 2	2017-10-14 20:16:15
3	Jason Cannon	0.02 s	Python 2	2017-10-14 20:39:36
4	Alex Zhao	0.02 s	Python 2	2017-10-14 20:40:15
5	Euirim Choi	0.02 s	Python 2	2017-10-14 21:23:39
6	Christofer Ohlsson	0.02 s	Python 2	2017-10-15 15:42:49
7	Çağdaş Öztekin	0.02 s	Python 2	2017-10-22 13:53:03
8	Nicholas Joaquin	0.02 s	Python 2	2018-01-09 03:52:07
9	Johann Ly	0.02 s	Python 2	2018-04-01 09:19:13
10	Haggai Liu	0.02 s	Python 2	2018-04-06 19:00:59

#	User	Runtime	Language	Date
1	Allen Kim	0.02 s	Python 3	2017-10-14 20:25:46
2	Kasper Borys	0.02 s	Python 3	2017-10-14 20:35:57
3	Victor Zheng	0.02 s	Python 3	2017-10-14 20:38:05
4	Jamie Simon	0.02 s	Python 3	2017-10-14 20:41:16
5	Daniel Mitchell	0.02 s	Python 3	2017-10-14 20:43:24
6	Noah Alexander Brubaker	0.02 s	Python 3	2017-10-14 20:46:43
7	Andrew Maczugowski	0.02 s	Python 3	2017-10-14 20:48:03
8	Tianyu Zhang	0.02 s	Python 3	2017-10-14 20:51:25
9	Kendra Wannamaker	0.02 s	Python 3	2017-10-14 20:59:31
10	Justin Mah	0.02 s	Python 3	2017-10-14 21:03:15

#	User	Runtime	Language	Date
1	Jinwoo Lee	0.28 s	Racket	2025-02-04 04:54:12

#	User	Runtime	Language	Date
1	Troy Sornson	0.05 s	Ruby	2022-01-20 01:29:36
2	Thomas Feld	0.06 s	Ruby	2023-08-17 15:37:55
3	Russell Ng	0.06 s	Ruby	2025-06-07 21:45:26

#	User	Length	Language	Date
1	Matthew Weston	922	C	2022-01-21 17:22:51
2	Mikael K Eriksson	1097	C	2021-01-25 16:44:02
3	紅茶	1146	C	2023-02-25 14:17:53
4	PhilCampbell	1196	C	2020-12-29 14:24:22
5	Imam Fauzan	1287	C	2020-10-05 02:45:13
6	Alicia Tay	1316	C	2020-08-21 17:35:49
7	Ximun Castoreo	1342	C	2020-07-07 15:15:51
8	Victor Ng	1542	C	2020-08-18 15:00:57
9	William Ball	1651	C	2020-03-09 01:35:54
10	Thomas	1735	C	2018-08-25 14:24:01

#	User	Length	Language	Date
1	Göran Andersson	1092	C#	2022-05-11 17:44:56
2	Kunwei Zhang	1127	C#	2018-06-09 07:30:59
3	Ben-Richard Ebbesvik	1471	C#	2023-12-29 00:00:22
4	Sano Gharzani	1697	C#	2023-03-20 00:13:03
5	Balder Sandstrøm	2462	C#	2018-09-29 01:23:20
6	Kayla Moorcroft	2553	C#	2023-05-28 18:56:17
7	Csaba Varga	2613	C#	2019-02-22 19:21:59
8	Mikael Fiala-Lundström	3119	C#	2021-04-13 00:23:23
9	Georgios Leandros Kyriazis	6242	C#	2020-12-12 19:05:09
10	Fredrik Stigsson	43664	C#	2019-05-23 08:36:59

#	User	Length	Language	Date
1	Yeung Man Tsung	625	C++	2022-11-20 08:53:09
2	Hoàng Bá Tuân	637	C++	2018-01-10 03:56:25
3	Jan Elffers	648	C++	2018-09-12 18:16:10
4	Sean Robert den Hartog	654	C++	2020-08-13 23:18:13
5	Hidden user	661	C++	2019-08-12 15:14:17
6	Tan Teong Seng	662	C++	2020-09-14 16:55:40
7	Ritul Kumar Singh	662	C++	2024-04-27 09:55:11
8	Riley Desrochers	665	C++	2017-10-14 23:42:39
9	Frederick Pek	672	C++	2021-06-03 12:49:53
10	Markus Mathiasen	675	C++	2021-08-02 14:12:51

#	User	Length	Language	Date
1	Hidden user	1363	Common Lisp	2019-07-21 05:57:49
2	David Cawthon	1450	Common Lisp	2019-06-09 02:33:51

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1052	F#	2022-08-01 19:41:04
2	Patrick Bahr	2289	F#	2021-02-21 21:37:10

#	User	Length	Language	Date
1	Michael Blunt	1169	Go	2025-08-19 00:58:32
2	Norbert Voelker	1255	Go	2021-04-14 23:18:18

#	User	Length	Language	Date
1	Hidden user	533	Haskell	2019-08-14 15:21:25
2	Steinar Simonnes	705	Haskell	2024-01-31 16:57:59
3	Andrés Marzal Varó	723	Haskell	2020-10-10 15:01:15
4	Sebastian Banert	742	Haskell	2024-07-07 19:12:11
5	Jan Hrček	828	Haskell	2020-10-19 05:51:10
6	Håkon Flatval	948	Haskell	2018-08-20 00:00:12
7	Brent Yorgey	975	Haskell	2017-10-15 04:55:43
8	Aurélien Pepin	1083	Haskell	2019-08-22 16:37:47
9	Jonathan Goodman	1160	Haskell	2018-05-25 23:54:23
10	Stefan Kennedy	1173	Haskell	2018-05-11 04:02:07

#	User	Length	Language	Date
1	Yue Lyu	738	Java	2019-11-08 22:45:11
2	Wang Zhizun	788	Java	2019-11-08 21:52:38
3	Hongjian Gu	788	Java	2019-11-08 21:54:24
4	Zhuoran Zhao	887	Java	2019-11-08 21:40:39
5	Luke Werle	888	Java	2022-11-12 15:09:23
6	Sandra Enghave Bach	894	Java	2023-10-29 19:59:46
7	Joshua Hudson	897	Java	2021-02-12 21:20:54
8	Kevin Kauffman	899	Java	2022-01-02 23:13:55
9	Karan Pratik Kumar	899	Java	2022-11-11 18:01:34
10	Caeden Whitaker	901	Java	2020-07-04 05:08:04

#	User	Length	Language	Date
1	Chris Wong	1045	JavaScript (Node.js)	2021-02-07 01:13:56
2	asterisk man	1501	JavaScript (Node.js)	2023-04-29 22:16:43
3	John	1548	JavaScript (Node.js)	2020-07-27 09:51:45
4	Andoko Chandra	1559	JavaScript (Node.js)	2020-10-03 20:55:11
5	Carl Sundvall	1683	JavaScript (Node.js)	2018-11-16 14:05:17
6	Nick Ivanov	1952	JavaScript (Node.js)	2020-03-13 15:06:05

#	User	Length	Language	Date
1	Jimmy Gustafsson	318	JavaScript (SpiderMonkey)	2024-07-08 22:26:52
2	Christian Cederquist	488	JavaScript (SpiderMonkey)	2022-11-15 13:27:50
3	Bjørn Chr. Soltvedt	608	JavaScript (SpiderMonkey)	2017-10-16 04:44:36
4	Peter Menyes	803	JavaScript (SpiderMonkey)	2021-02-11 22:34:20
5	Peter Kedemo	806	JavaScript (SpiderMonkey)	2017-10-23 00:10:25
6	Andrea Bianchessi	978	JavaScript (SpiderMonkey)	2018-08-27 18:08:56

#	User	Length	Language	Date
1	Danny Robinson	169	Julia	2023-09-05 20:09:29
2	Timothy Gaede	1343	Julia	2024-05-12 10:53:08

#	User	Length	Language	Date
1	Troy Warmboe	816	Kotlin	2020-02-06 22:57:54
2	Sarek Høverstad Skotåm	831	Kotlin	2020-10-10 19:32:00
3	Hidden user	1119	Kotlin	2017-12-05 14:42:43
4	Neil Harmon	1600	Kotlin	2019-04-09 15:48:24

#	User	Length	Language	Date
1	Brandon Tang	1265	OCaml	2023-07-17 05:28:59
2	Gabriella Gloria	1549	OCaml	2025-05-07 18:20:23

#	User	Length	Language	Date
1	Ingemar Ragnemalm	1804	Pascal	2017-11-24 23:01:04

#	User	Length	Language	Date
1	Jonas Lindenskov Nielsen	704	PHP	2019-10-10 10:04:13
2	Renate	907	PHP	2022-07-25 01:26:43
3	Andre Wahyudi	1276	PHP	2022-11-16 05:19:19

#	User	Length	Language	Date
1	Thomas Feld	242	Python 2	2019-08-30 12:51:27
2	William Gan	354	Python 2	2017-12-31 13:46:50
3	Christofer Ohlsson	369	Python 2	2017-10-15 15:42:49
4	Andrei Stoica	389	Python 2	2019-01-29 10:27:28
5	Jesper Öqvist	403	Python 2	2018-10-20 18:14:30
6	Jeff Robertson	419	Python 2	2017-10-14 21:03:23
7	Johan Wind	423	Python 2	2018-03-20 18:02:38
8	Lars Åström	425	Python 2	2019-04-08 16:30:58
9	Björn Magnusson	444	Python 2	2019-09-25 18:45:01
10	Haggai Liu	447	Python 2	2018-04-06 19:00:59

#	User	Length	Language	Date
1	Thibault Raffaillac	196	Python 3	2023-07-31 17:21:49
2	Tai Tze Kin	202	Python 3	2024-05-02 20:54:21
3	Kaaden RumanCam	204	Python 3	2023-03-18 05:53:01
4	Guillermo Hernández	225	Python 3	2022-09-29 08:11:10
5	Thomas Draper	235	Python 3	2023-02-05 20:41:41
6	Kelly Dance	237	Python 3	2024-06-10 05:43:14
7	Ben Pendley	264	Python 3	2023-01-13 20:02:10
8	Marcus Xu	266	Python 3	2021-12-17 08:07:48
9	Teikn Smith	266	Python 3	2022-05-06 18:43:28
10	Charles Ancheta	267	Python 3	2023-03-17 06:09:22

#	User	Length	Language	Date
1	Jinwoo Lee	1078	Racket	2025-02-04 04:54:12

#	User	Length	Language	Date
1	Thomas Feld	122	Ruby	2023-08-17 15:51:58
2	Russell Ng	140	Ruby	2025-06-07 21:45:26
3	Troy Sornson	829	Ruby	2022-01-20 01:29:36

#	User	Length	Language	Date
1	Vincent Lagerros	833	Rust	2025-02-14 20:24:34
2	Pankajkumar Patro	891	Rust	2025-01-03 23:04:05
3	David Rasch	1060	Rust	2020-10-09 15:44:51
4	Oskar Strömberg	1140	Rust	2020-10-23 06:38:22
5	Freek van Keulen	1173	Rust	2021-07-18 18:56:33
6	Kok Dith	1178	Rust	2021-08-06 10:19:10
7	David Zacek	1348	Rust	2021-05-25 01:28:52
8	Eric Pinter	1709	Rust	2021-11-26 02:43:18
9	Kunwei Zhang	1937	Rust	2022-12-13 04:02:18
10	Bas Dirks	1951	Rust	2022-01-03 16:48:08

Solution running time distribution