Problem A
A Cappella Recording — Problem Statistics

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Submissions	4282
Accepted submissions	1397
Submission ratio	32.62%
Authors	1391
Full solves [?]	1149
Full solve Ratio	82.60%

#	User	Runtime	Language	Date
1	Bergur Snorrason	0.01 s	C	2024-03-05 14:05:03
2	Guangyi Zhou	0.01 s	C	2025-05-14 03:28:20
3	Alexander Bilde Pedersen	0.02 s	C	2024-10-18 15:22:50
4	Kevin Sun	0.02 s	C	2025-01-27 20:31:47
5	Indah Mbah	0.02 s	C	2025-01-30 15:29:47
6	Batman Gaming	0.02 s	C	2025-02-04 03:03:47
7	Michael Mathy	0.02 s	C	2025-02-08 02:53:42
8	Jerry Chen	0.02 s	C	2025-02-08 04:04:45
9	shanmuga prasnna	0.02 s	C	2025-02-23 15:33:40
10	PRIYANKA S S	0.02 s	C	2025-02-25 06:32:47

#	User	Runtime	Language	Date
1	Glen	0.06 s	C#	2024-07-17 19:31:02
2	Astrid Grytberg	0.06 s	C#	2025-03-18 17:51:15
3	Diogo Fusco	0.06 s	C#	2025-03-18 22:34:04
4	Diego Dell	0.06 s	C#	2025-04-03 15:28:54
5	Pontus Lindell	0.06 s	C#	2025-05-15 14:42:50
6	Matias Córdova	0.06 s	C#	2025-05-27 23:56:52
7	Alexis Olivia Haiar	0.06 s	C#	2025-06-11 20:03:07
8	Linus Leven	0.06 s	C#	2025-08-26 19:14:18
9	Albert Jende	0.06 s	C#	2025-11-17 14:28:52
10	Jens Erik	0.06 s	C#	2025-11-19 00:57:24

#	User	Runtime	Language	Date
1	Jonathan Hallström	0.00 s	C++	2024-02-28 13:41:27
2	Lawry Sorenson	0.01 s	C++	2024-09-15 02:29:43
3	Richie Tan	0.01 s	C++	2025-04-17 04:05:55
4	Hiep Pham	0.02 s	C++	2024-02-24 20:11:02
5	Mazin Karjikar	0.02 s	C++	2024-02-24 20:16:17
6	Anmol Choudhary	0.02 s	C++	2024-02-24 20:37:14
7	Aliyyiakbar Shirinli	0.02 s	C++	2024-02-24 20:50:13
8	Aayan ABK	0.02 s	C++	2024-02-24 21:07:35
9	Ahmedoviç Amamou	0.02 s	C++	2024-02-24 21:13:37
10	kabbo ghosh	0.02 s	C++	2024-02-24 23:32:57

#	User	Runtime	Language	Date
1	Magnus Baasch Langkilde	0.29 s	F#	2025-02-20 09:50:31

#	User	Runtime	Language	Date
1	Norbert Voelker	0.03 s	Go	2024-09-11 16:04:20
2	Sirpi Yugendar	0.03 s	Go	2025-02-21 20:18:01
3	Anthony Colin	0.03 s	Go	2025-03-07 20:44:40
4	Yamone Oo	0.03 s	Go	2025-04-21 11:45:28

#	User	Runtime	Language	Date
1	Steinar Simonnes	0.09 s	Haskell	2025-07-16 15:16:17
2	Brent Yorgey	0.20 s	Haskell	2024-02-28 16:24:42
3	ConnorFleischman	0.31 s	Haskell	2024-11-17 03:04:01
4	Tushig Erdenebulgan	0.31 s	Haskell	2025-05-16 13:30:07
5	Alexandre Charland	0.39 s	Haskell	2025-02-24 15:30:31
6	Mitchel Carson	0.39 s	Haskell	2025-05-16 03:00:18
7	Luciano Mattoli	0.40 s	Haskell	2024-11-17 21:09:19

#	User	Runtime	Language	Date
1	Guangyi Zhou	0.07 s	Java	2025-05-12 15:09:41
2	Bjørn Dons	0.17 s	Java	2024-02-27 20:19:08
3	Liam Keliher	0.21 s	Java	2024-03-03 22:10:20
4	John Lindstrom	0.21 s	Java	2024-08-18 18:59:08
5	Miorel Palii	0.22 s	Java	2024-02-26 06:32:57
6	Issa Issack	0.22 s	Java	2024-03-07 01:50:08
7	Amy Colpitts	0.22 s	Java	2024-03-07 02:15:35
8	Ranjith M	0.25 s	Java	2024-02-24 23:04:44
9	Ayush Rigal	0.25 s	Java	2024-10-30 14:35:33
10	Marc Dominic San Pedro	0.27 s	Java	2024-04-11 05:38:27

#	User	Runtime	Language	Date
1	jack	0.17 s	JavaScript (Node.js)	2024-12-29 00:14:11
2	Yamone Oo	0.22 s	JavaScript (Node.js)	2025-04-21 11:48:50
3	Aashish Anand	0.31 s	JavaScript (Node.js)	2025-03-01 21:59:01

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.06 s	JavaScript (SpiderMonkey)	2024-09-05 22:16:41
2	Đậu Huy Minh	0.06 s	JavaScript (SpiderMonkey)	2025-08-30 17:56:00
3	Bjørn Chr. Soltvedt	0.09 s	JavaScript (SpiderMonkey)	2024-02-25 01:34:26

#	User	Runtime	Language	Date
1	Winston Wu	0.56 s	Julia	2024-09-18 10:23:48
2	Timothy Gaede	0.60 s	Julia	2024-08-20 12:36:11

#	User	Runtime	Language	Date
1	Adam Rankin	0.31 s	Kotlin	2026-01-13 22:16:47
2	Paul McBurney	0.51 s	Kotlin	2024-02-24 20:57:04

#	User	Runtime	Language	Date
1	Matthew Farshad	0.07 s	Lua	2025-02-05 21:24:01

#	User	Runtime	Language	Date
1	Hidden user	0.10 s	OCaml	2024-06-10 00:12:07

#	User	Runtime	Language	Date
1	Peter Toso	0.08 s	PHP	2025-05-16 07:47:11

#	User	Runtime	Language	Date
1	Carolina Lopez Mendez	0.10 s	Python 2	2025-10-23 18:58:57
2	Karla Silva De Gyves	0.10 s	Python 2	2025-10-23 19:01:26
3	Ekta Mali	0.11 s	Python 2	2025-05-31 14:56:31

#	User	Runtime	Language	Date
1	Kadriye Yildiz	0.07 s	Python 3	2024-08-28 16:00:53
2	Hidden user	0.07 s	Python 3	2024-09-01 11:38:01
3	Ole Vik Lysne	0.07 s	Python 3	2024-09-11 16:24:45
4	Charlie Eastin	0.07 s	Python 3	2024-11-05 00:16:18
5	Donovan Lim	0.07 s	Python 3	2024-11-10 15:32:30
6	Bikram Khanal	0.07 s	Python 3	2025-02-08 20:07:51
7	Astha Shrestha	0.07 s	Python 3	2025-02-23 22:05:03
8	Karthi V S	0.07 s	Python 3	2025-02-24 02:33:12
9	Ugur Turgut	0.07 s	Python 3	2025-03-06 02:16:11
10	Petr	0.07 s	Python 3	2025-03-23 15:13:56

#	User	Runtime	Language	Date
1	Thomas Feld	0.11 s	Ruby	2025-02-11 23:47:00

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.00 s	Rust	2024-06-02 04:35:44
2	Bas Dirks	0.00 s	Rust	2025-02-19 19:02:28
3	Daniel Anker Hermansen	0.01 s	Rust	2024-03-29 23:36:56
4	Frank Endriss	0.01 s	Rust	2024-08-16 15:40:16
5	Artur Khuziakhmetov	0.01 s	Rust	2025-01-17 09:16:35
6	Aza Maulana Hadi	0.01 s	Rust	2025-08-03 10:32:30
7	Erik Magnusson	0.02 s	Rust	2024-02-27 21:33:04
8	Carter Snook	0.02 s	Rust	2024-03-24 20:38:32
9	Winston Wu	0.02 s	Rust	2024-09-12 09:04:28

#	User	Runtime	Language	Date
1	isaveth guzman	0.12 s	TypeScript	2026-01-29 06:36:12
2	destiny pyn	0.13 s	TypeScript	2025-12-22 22:11:24

#	User	Length	Language	Date
1	ABISHEK G	475	C	2025-05-01 05:39:07
2	MUTHURAJAN G	552	C	2025-04-09 15:55:31
3	Tài Nguyễn	555	C	2025-11-07 15:14:23
4	Owen Davis	561	C	2025-04-25 18:39:44
5	Henrik Fredriksson	570	C	2025-11-08 15:10:22
6	Jeevanna M	573	C	2025-04-22 15:20:44
7	ELAMATHI S	579	C	2025-04-14 12:47:29
8	Anavi Vyawhare	589	C	2025-04-19 08:09:14
9	Mauricio B	593	C	2025-04-25 16:14:29
10	Deebadarshan S	594	C	2025-04-18 16:11:46

#	User	Length	Language	Date
1	Alva Larsson	564	C#	2025-04-08 15:16:09
2	Jonas Bergling	607	C#	2025-09-03 08:59:07
3	Linus Leven	651	C#	2025-08-26 19:14:18
4	Callum Wilkinson	685	C#	2025-02-12 14:49:33
5	Albert Jende	687	C#	2025-11-17 14:28:52
6	Jens Erik	688	C#	2025-11-19 00:57:24
7	Simon Thillemann Nielsen	688	C#	2025-11-19 00:57:46
8	Pontus Lindell	876	C#	2025-05-15 14:42:50
9	Alexis Olivia Haiar	918	C#	2025-06-11 20:03:07
10	Benjamin Bilbeau	941	C#	2024-07-18 18:40:10

#	User	Length	Language	Date
1	Abul Farhad Ibn Alam	259	C++	2024-03-03 11:32:11
2	Đậu Huy Minh	278	C++	2025-08-30 10:10:38
3	Adrien	313	C++	2024-05-24 10:07:56
4	Elias Lolck	316	C++	2025-12-02 15:57:09
5	Al_02_34381	317	C++	2025-03-21 16:49:21
6	Mic Rey	319	C++	2025-08-10 15:56:44
7	Harshul	324	C++	2025-05-13 12:40:17
8	Jesús Pacheco Alonso	328	C++	2024-09-06 17:15:08
9	Rafael Kristoforus Yanto	339	C++	2025-02-17 08:30:16
10	A.J.M ISTIAQUE	340	C++	2024-03-03 12:12:38

#	User	Length	Language	Date
1	Magnus Baasch Langkilde	795	F#	2025-02-20 09:50:31

#	User	Length	Language	Date
1	Yamone Oo	644	Go	2025-04-21 11:45:28
2	Norbert Voelker	657	Go	2024-09-11 16:04:20
3	Anthony Colin	1064	Go	2025-03-07 20:44:40
4	Sirpi Yugendar	4345	Go	2025-02-21 20:18:01

#	User	Length	Language	Date
1	Alexandre Charland	257	Haskell	2025-02-24 15:30:31
2	Tushig Erdenebulgan	300	Haskell	2025-05-16 13:30:07
3	Steinar Simonnes	578	Haskell	2025-07-16 15:16:17
4	Mitchel Carson	579	Haskell	2025-05-16 03:00:18
5	ConnorFleischman	858	Haskell	2024-11-17 03:04:01
6	Luciano Mattoli	1548	Haskell	2024-11-17 21:09:19
7	Brent Yorgey	8817	Haskell	2024-02-28 16:24:42

#	User	Length	Language	Date
1	John Hershey	411	Java	2024-02-26 19:36:24
2	Tristan Rush	447	Java	2024-02-24 22:55:15
3	Nick Wu	473	Java	2024-02-27 00:26:23
4	David Knoflíček	528	Java	2025-03-20 13:44:32
5	Rushin Patel	538	Java	2026-03-11 17:33:46
6	PandaAnnie	546	Java	2025-03-19 23:50:30
7	Shardul Dhongade	550	Java	2024-02-24 21:43:59
8	SARAVANARAJAN K	554	Java	2025-03-31 10:51:58
9	Hidden user	568	Java	2025-05-03 00:47:10
10	MADHIHA NISHAD Z	571	Java	2025-03-27 16:08:38

#	User	Length	Language	Date
1	Yamone Oo	729	JavaScript (Node.js)	2025-04-21 11:48:50
2	jack	876	JavaScript (Node.js)	2024-12-29 00:14:11
3	Aashish Anand	1325	JavaScript (Node.js)	2025-03-01 21:59:01

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	118	JavaScript (SpiderMonkey)	2024-09-05 22:37:38
2	Bjørn Chr. Soltvedt	200	JavaScript (SpiderMonkey)	2024-02-25 01:42:09
3	Đậu Huy Minh	235	JavaScript (SpiderMonkey)	2025-08-30 18:10:39

#	User	Length	Language	Date
1	Winston Wu	426	Julia	2024-09-18 10:23:48
2	Timothy Gaede	1808	Julia	2024-08-20 12:36:11

#	User	Length	Language	Date
1	Paul McBurney	479	Kotlin	2024-02-24 20:57:04
2	Adam Rankin	1170	Kotlin	2026-01-13 22:16:47

#	User	Length	Language	Date
1	Matthew Farshad	391	Lua	2025-02-05 21:24:01

#	User	Length	Language	Date
1	Hidden user	744	OCaml	2024-06-10 00:12:07

#	User	Length	Language	Date
1	Peter Toso	363	PHP	2025-05-16 07:47:11

#	User	Length	Language	Date
1	Karla Silva De Gyves	289	Python 2	2025-10-23 19:01:26
2	Ekta Mali	559	Python 2	2025-05-31 14:56:31
3	Carolina Lopez Mendez	668	Python 2	2025-10-23 18:58:57

#	User	Length	Language	Date
1	Daniel Bogorad	95	Python 3	2025-09-19 16:44:54
2	Guk Yi Siong	105	Python 3	2024-12-27 16:40:35
3	Sander Oppen	108	Python 3	2024-11-08 14:32:28
4	Rachel Krohn	113	Python 3	2025-03-29 17:06:51
5	Kristian Sørdal	115	Python 3	2024-04-22 18:59:34
6	Ole Vik Lysne	115	Python 3	2024-09-11 16:41:14
7	Lukas Kerren	116	Python 3	2024-05-08 00:35:51
8	Iman Khodadi	119	Python 3	2024-03-11 12:53:49
9	Casper Rysgaard	121	Python 3	2024-02-27 13:10:42
10	Wernher To	121	Python 3	2025-01-21 06:09:38

#	User	Length	Language	Date
1	Thomas Feld	63	Ruby	2025-02-11 23:43:35

#	User	Length	Language	Date
1	Artur Khuziakhmetov	461	Rust	2025-01-17 09:16:35
2	Bas Dirks	591	Rust	2025-01-26 06:59:52
3	Aza Maulana Hadi	728	Rust	2025-08-03 10:32:30
4	Winston Wu	888	Rust	2024-09-12 09:04:28
5	Carter Snook	934	Rust	2024-03-24 20:38:32
6	Erik Magnusson	4288	Rust	2024-02-27 21:33:04
7	Vincent Lagerros	8982	Rust	2024-06-02 04:35:44
8	Frank Endriss	10795	Rust	2024-08-16 15:40:16
9	Daniel Anker Hermansen	26882	Rust	2024-03-29 23:36:56

#	User	Length	Language	Date
1	isaveth guzman	508	TypeScript	2026-01-29 06:36:12
2	destiny pyn	841	TypeScript	2025-12-22 22:11:24

Solution running time distribution