Problem A
Another Brick in the Wall — Problem Statistics

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Submissions	7135
Accepted submissions	3429
Submission ratio	48.06%
Authors	3393
Full solves [?]	3032
Full solve Ratio	89.36%

#	User	Runtime	Language	Date
1	Brady Maurer	0.04 s	Bash	2025-04-09 02:14:48

#	User	Runtime	Language	Date
1	Przemysław Curzytek	0.01 s	C#	2016-12-08 06:46:58
2	Raja Sanjeev Kumar Nakka	0.02 s	C#	2016-06-24 20:12:38
3	Robert Low	0.02 s	C#	2016-07-19 12:02:54
4	Duelene Olson	0.02 s	C#	2016-08-04 04:33:01
5	Hidden user	0.02 s	C#	2016-10-13 14:03:21
6	Alexis Lindgren	0.02 s	C#	2016-10-13 19:35:29
7	Marko Babic	0.02 s	C#	2016-12-03 20:30:47
8	Marusky Cullen	0.02 s	C#	2016-12-11 15:31:10
9	Hallvard Braaten	0.02 s	C#	2017-01-18 17:19:22
10	Michael Gulliksen	0.02 s	C#	2017-01-21 11:36:04

#	User	Runtime	Language	Date
1	Patrik Nyman	0.01 s	Common Lisp	2022-09-09 19:39:40

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.04 s	F#	2022-10-24 19:01:43
2	oskar holland	0.06 s	F#	2023-09-27 09:50:39
3	Martin Handest	0.06 s	F#	2023-09-27 10:29:27

#	User	Runtime	Language	Date
1	Philip Sala	0.00 s	Go	2024-11-12 18:37:22
2	Chris Vilches	0.01 s	Go	2024-08-18 15:18:54
3	Brandon Ibbotson	0.02 s	Go	2018-07-14 03:26:51
4	Nick Jarvis	0.03 s	Go	2023-01-21 03:23:21
5	Nhan Tran	0.03 s	Go	2025-03-01 15:11:28
6	Eric Martin	0.08 s	Go	2019-01-02 18:36:09
7	Hidden user	0.08 s	Go	2020-09-18 17:29:53
8	Evelyn May	0.08 s	Go	2020-12-06 01:47:58
9	Krzysztof Gibuła	0.08 s	Go	2021-03-22 17:41:39
10	Norbert Voelker	0.08 s	Go	2021-05-11 22:49:45

#	User	Runtime	Language	Date
1	Isaac Arvestad	0.00 s	Haskell	2017-02-19 23:09:13
2	Brent Yorgey	0.00 s	Haskell	2017-10-27 14:00:10
3	Blake Hyde	0.01 s	Haskell	2016-09-14 15:14:42
4	Oliver Petri	0.01 s	Haskell	2016-10-12 23:36:02
5	Ramtin Javanmardi	0.01 s	Haskell	2016-10-25 15:30:17
6	Matthew Johnson	0.01 s	Haskell	2017-02-15 18:26:11
7	Hidden user	0.01 s	Haskell	2017-04-03 17:12:15
8	César Antonio Carvajal de la Haza	0.01 s	Haskell	2017-04-27 16:03:43
9	Antony Lee	0.01 s	Haskell	2017-07-26 23:12:53
10	Patrik Lilja	0.01 s	Haskell	2017-08-08 20:01:00

#	User	Runtime	Language	Date
1	Marcus Johansson	0.05 s	Java	2016-09-04 12:47:16
2	Ankur Verma	0.05 s	Java	2016-10-21 19:11:28
3	William Fiset	0.05 s	Java	2016-11-12 01:17:08
4	Winston Cheung	0.05 s	Java	2017-03-01 04:34:54
5	Samuel Klingström	0.05 s	Java	2017-05-11 18:16:06
6	Taras Romanyuk	0.05 s	Java	2024-12-13 12:29:24
7	CUX "INDIO" PRADA	0.05 s	Java	2025-01-30 10:40:06
8	Eskil Jarlskog	0.06 s	Java	2016-06-12 10:32:51
9	Simon Xue	0.06 s	Java	2016-06-24 09:57:28
10	Mouad Naciri	0.06 s	Java	2016-07-20 21:05:38

#	User	Runtime	Language	Date
1	Sander Hellesø	0.05 s	JavaScript (Node.js)	2019-04-27 12:46:36
2	Nicola Ye	0.05 s	JavaScript (Node.js)	2025-04-11 16:28:24
3	Samuel Högfeldt	0.09 s	JavaScript (Node.js)	2022-07-18 08:51:47
4	Ster Sar	0.09 s	JavaScript (Node.js)	2023-04-21 16:25:41
5	Devlyn Demmon	0.40 s	JavaScript (Node.js)	2019-08-13 07:54:20
6	Johnny Bravo	0.40 s	JavaScript (Node.js)	2019-08-14 22:44:43
7	Peter Kedemo	0.42 s	JavaScript (Node.js)	2019-12-25 11:04:12
8	Andoko Chandra	0.42 s	JavaScript (Node.js)	2020-10-21 04:26:01
9	Mandala Binsar	0.42 s	JavaScript (Node.js)	2020-12-17 14:57:08
10	Logan Wynes	0.42 s	JavaScript (Node.js)	2022-04-21 20:42:43

#	User	Runtime	Language	Date
1	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2016-06-12 18:58:24
2	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-06-20 17:53:57
3	Knut Salomonsson	0.01 s	JavaScript (SpiderMonkey)	2017-01-11 13:56:30
4	Steffen Stenersen	0.01 s	JavaScript (SpiderMonkey)	2017-01-18 16:58:53
5	Mats Krüger Svensson	0.01 s	JavaScript (SpiderMonkey)	2017-01-18 17:58:35
6	Nicklas Utgaard	0.01 s	JavaScript (SpiderMonkey)	2017-01-18 18:24:13
7	Øyvind Skaar	0.01 s	JavaScript (SpiderMonkey)	2017-01-18 22:23:23
8	Paul Leung	0.01 s	JavaScript (SpiderMonkey)	2017-03-21 18:48:27
9	Rory Stolzenberg	0.01 s	JavaScript (SpiderMonkey)	2017-11-15 02:00:12
10	Danpaol	0.01 s	JavaScript (SpiderMonkey)	2018-05-05 21:16:35

#	User	Runtime	Language	Date
1	Hidden user	0.43 s	Julia	2025-02-23 20:38:14
2	Timothy Gaede	0.46 s	Julia	2024-06-04 12:13:33

#	User	Runtime	Language	Date
1	Jahid Hasan Imon	0.15 s	Kotlin	2020-07-02 20:43:29
2	Troy Warmboe	0.22 s	Kotlin	2023-04-17 21:34:24
3	Adam Rankin	0.22 s	Kotlin	2023-05-11 00:26:13
4	Josie Bierbaum	0.23 s	Kotlin	2019-12-06 18:21:20
5	Paul Kratz	0.23 s	Kotlin	2020-07-08 14:19:53
6	Dayan Ruben Gonzalez	0.23 s	Kotlin	2020-09-30 02:49:38
7	Neil Harmon	0.24 s	Kotlin	2019-05-17 14:52:48
8	Sergey Jakobsen	0.25 s	Kotlin	2021-03-06 11:36:58

#	User	Runtime	Language	Date
1	Alexander Cai	0.00 s	OCaml	2022-01-11 05:29:01
2	Brandon Tang	0.00 s	OCaml	2023-09-24 05:38:06

#	User	Runtime	Language	Date
1	David Connolly	0.00 s	Pascal	2017-08-25 11:10:05
2	Egor Shchetinin	0.00 s	Pascal	2018-01-23 18:07:46
3	Vova Podkorytov	0.00 s	Pascal	2018-01-23 18:09:21
4	Ingemar Ragnemalm	0.00 s	Pascal	2018-08-27 15:59:04

#	User	Runtime	Language	Date
1	Susanne Ragnemalm	0.01 s	PHP	2018-04-06 18:51:30
2	G V	0.01 s	PHP	2020-01-30 03:29:38
3	Muhammad Asyraf bin Akop	0.01 s	PHP	2022-05-23 11:10:26

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.01 s	Prolog	2019-05-05 09:22:23
2	Hakan Kjellerstrand	0.04 s	Prolog	2023-03-13 16:41:31

#	User	Runtime	Language	Date
1	Christofer Ohlsson	0.03 s	Python 2	2016-06-12 11:34:43
2	Kasper Borys	0.03 s	Python 2	2016-06-21 00:03:30
3	Erik Sillén	0.03 s	Python 2	2016-08-08 13:22:21
4	udprogrammingteam Team	0.03 s	Python 2	2016-09-17 04:34:29
5	Johan Wieslander	0.03 s	Python 2	2016-10-09 17:59:58
6	Jainesh Patel	0.03 s	Python 2	2016-10-21 18:56:12
7	Vaibhav Tulsyan	0.03 s	Python 2	2016-10-21 19:53:21
8	Matt Bonsall	0.03 s	Python 2	2016-10-23 21:56:18
9	Tim Loyen	0.03 s	Python 2	2016-11-24 20:56:44
10	Stefan Kennedy	0.03 s	Python 2	2016-12-22 20:30:34

#	User	Runtime	Language	Date
1	Mikael Hedin	0.02 s	Python 3	2016-06-12 10:10:24
2	Johannes Agestam	0.02 s	Python 3	2016-06-12 10:10:53
3	Erik Bjäreholt	0.02 s	Python 3	2016-06-12 10:16:00
4	Robert Welin-Berger	0.02 s	Python 3	2016-06-12 10:19:27
5	Björn Magnusson	0.02 s	Python 3	2016-06-12 10:21:01
6	Alexandre Loiko	0.02 s	Python 3	2016-06-12 11:14:24
7	Wayne	0.02 s	Python 3	2016-06-24 23:21:05
8	Lucia Pál (Simanová)	0.02 s	Python 3	2016-06-27 12:52:01
9	unkownfire25	0.02 s	Python 3	2016-07-16 05:30:36
10	Nathan Collins	0.02 s	Python 3	2016-08-14 21:18:37

#	User	Runtime	Language	Date
1	Casper Christensen	0.03 s	Ruby	2016-06-28 17:16:53
2	Erik Rydbert	0.03 s	Ruby	2016-09-18 04:40:07
3	Lee Tze Han	0.04 s	Ruby	2018-06-29 11:11:39
4	Hidden user	0.05 s	Ruby	2019-02-17 02:53:14
5	Kok Dith	0.05 s	Ruby	2021-08-27 04:01:57
6	Thomas Feld	0.06 s	Ruby	2023-03-01 15:20:42
7	Clement Oh	0.06 s	Ruby	2024-02-28 16:47:19

#	User	Length	Language	Date
1	Brady Maurer	515	Bash	2025-04-09 02:14:48

#	User	Length	Language	Date
1	Huzefa Khan	350	C	2022-02-11 22:15:15
2	Naga Venkata Sneha Majeti	354	C	2016-10-21 19:51:41
3	Hidden user	358	C	2017-11-24 05:13:18
4	Velvet	382	C	2020-11-19 09:33:56
5	Juan Torres	405	C	2019-03-11 00:05:35
6	Ian Mahendra Setiawan	420	C	2026-01-30 12:34:53
7	Yao Wang	422	C	2019-04-08 20:38:22
8	Noah Weninger	424	C	2017-01-18 00:16:54
9	Sambit Palit	429	C	2020-10-21 20:22:29
10	Andrew Roberts	431	C	2017-09-24 01:18:18

#	User	Length	Language	Date
1	Leon V	625	C#	2019-11-08 15:08:56
2	Esty Crow	627	C#	2025-06-06 03:04:22
3	Henrik Andersson	655	C#	2018-11-04 01:39:37
4	Klas af Geijerstam	705	C#	2017-04-13 21:11:39
5	Anthony Ye	742	C#	2025-06-13 20:22:08
6	Victor Byron Vásquez Reynolds	754	C#	2019-12-26 22:30:07
7	Thomas Norris	762	C#	2020-01-08 16:56:41
8	Jessica Gustafsson	784	C#	2025-05-13 14:01:33
9	Göran Andersson	796	C#	2022-05-20 01:43:04
10	Diego Dell	920	C#	2025-05-29 05:19:53

#	User	Length	Language	Date
1	Taylor Rodríguez	128	C++	2025-06-03 01:21:06
2	Tyler Fernando	193	C++	2023-06-21 05:53:29
3	Antonio Molina Lovett	242	C++	2016-08-06 21:42:28
4	Asep Darmawan	259	C++	2022-07-12 12:16:52
5	Anonymous	259	C++	2022-07-14 15:51:38
6	SIBO PENG	267	C++	2023-10-17 05:44:51
7	Khawla Hbiech	282	C++	2019-03-12 07:02:43
8	Ganapathy Sanath Balaji	282	C++	2019-08-14 16:25:58
9	Emmanuel Anaya	296	C++	2021-03-08 20:53:35
10	Herman Karlsson	298	C++	2016-06-12 10:09:23

#	User	Length	Language	Date
1	Patrik Nyman	599	Common Lisp	2022-09-09 19:39:40

#	User	Length	Language	Date
1	Martin Handest	177	F#	2023-09-27 10:52:34
2	oskar holland	271	F#	2023-09-27 09:50:39
3	Jacob Harris Cryer Kragh	718	F#	2022-10-24 19:01:43

#	User	Length	Language	Date
1	Chris Vilches	366	Go	2024-08-18 15:18:54
2	Nick Jarvis	385	Go	2023-01-21 03:23:21
3	Clinton Walker	455	Go	2020-03-05 10:58:22
4	Brandon Ibbotson	538	Go	2018-07-14 03:26:51
5	Krzysztof Gibuła	668	Go	2021-03-22 17:41:39
6	Kristoffer Åhgren	686	Go	2017-05-09 21:07:05
7	Nhan Tran	714	Go	2025-03-01 15:11:28
8	Eric Martin	720	Go	2019-01-02 18:36:09
9	Norbert Voelker	764	Go	2021-05-11 22:49:45
10	Philip Sala	834	Go	2024-11-12 18:37:22

#	User	Length	Language	Date
1	Antony Lee	342	Haskell	2017-07-26 23:12:53
2	Brent Yorgey	364	Haskell	2017-10-27 14:00:10
3	Mason Barnhill	386	Haskell	2023-08-20 21:37:29
4	Patrik Lilja	448	Haskell	2017-08-08 20:01:00
5	Øyvind Almli	467	Haskell	2021-05-24 03:28:40
6	Jan Hrček	525	Haskell	2021-03-13 14:23:41
7	Matthew Johnson	542	Haskell	2017-02-15 18:26:11
8	Steinar Simonnes	548	Haskell	2020-11-27 16:00:24
9	César Antonio Carvajal de la Haza	559	Haskell	2017-04-27 16:03:43
10	Blake Hyde	575	Haskell	2016-09-14 15:14:42

#	User	Length	Language	Date
1	Le Heng Chieu	408	Java	2018-01-20 07:38:48
2	Hamza Bjitrø	427	Java	2019-07-07 14:00:07
3	Leo Wang	483	Java	2018-10-10 21:21:32
4	Chaimaa Aajafir	493	Java	2016-12-28 15:10:58
5	Steven Connor Dear	493	Java	2019-12-02 20:43:23
6	Christian Allen	498	Java	2025-04-04 14:21:26
7	Ali	503	Java	2023-05-02 23:19:13
8	Emilie Hyslop	513	Java	2020-12-11 23:46:23
9	Tom Houben	516	Java	2018-11-27 16:51:32
10	Tiffani Slutsky	518	Java	2025-03-21 02:47:41

#	User	Length	Language	Date
1	Peter Kedemo	671	JavaScript (Node.js)	2019-12-25 11:04:12
2	Nicola Ye	824	JavaScript (Node.js)	2025-04-11 16:28:24
3	Logan Wynes	904	JavaScript (Node.js)	2022-04-21 20:42:43
4	Johnny Bravo	939	JavaScript (Node.js)	2019-08-14 22:50:35
5	Samuel Högfeldt	940	JavaScript (Node.js)	2022-07-18 08:51:47
6	Ster Sar	1037	JavaScript (Node.js)	2023-04-21 16:25:41
7	Sander Hellesø	1108	JavaScript (Node.js)	2019-04-27 12:46:36
8	Devlyn Demmon	1141	JavaScript (Node.js)	2019-08-13 07:54:20
9	Andoko Chandra	1231	JavaScript (Node.js)	2020-10-21 04:26:01
10	Mandala Binsar	1238	JavaScript (Node.js)	2020-12-17 14:57:08

#	User	Length	Language	Date
1	Jimmy Gustafsson	148	JavaScript (SpiderMonkey)	2025-07-15 17:45:44
2	Bjørn Chr. Soltvedt	329	JavaScript (SpiderMonkey)	2016-06-20 17:53:57
3	Zach Tschetter	332	JavaScript (SpiderMonkey)	2025-02-08 21:21:52
4	Christian Pilegaard Cederquist	343	JavaScript (SpiderMonkey)	2023-01-31 19:01:17
5	Peter Menyes	353	JavaScript (SpiderMonkey)	2021-10-12 22:20:59
6	Peter Kedemo	414	JavaScript (SpiderMonkey)	2016-06-12 18:58:24
7	Rory Stolzenberg	427	JavaScript (SpiderMonkey)	2017-11-15 02:00:12
8	Paul Leung	499	JavaScript (SpiderMonkey)	2017-03-21 18:48:27
9	Knut Salomonsson	504	JavaScript (SpiderMonkey)	2017-01-11 13:56:30
10	Casey Smith	508	JavaScript (SpiderMonkey)	2019-05-16 22:38:43

#	User	Length	Language	Date
1	Hidden user	354	Julia	2025-02-23 20:38:14
2	Timothy Gaede	370	Julia	2024-06-04 12:13:33

#	User	Length	Language	Date
1	Sergey Jakobsen	466	Kotlin	2021-03-06 11:36:58
2	Dayan Ruben Gonzalez	590	Kotlin	2020-09-30 02:49:38
3	Jahid Hasan Imon	606	Kotlin	2020-07-02 20:46:48
4	Josie Bierbaum	619	Kotlin	2019-12-06 18:21:20
5	Paul Kratz	737	Kotlin	2020-07-08 14:19:53
6	Troy Warmboe	817	Kotlin	2023-04-17 21:34:24
7	Adam Rankin	886	Kotlin	2023-05-11 00:26:13
8	Neil Harmon	1162	Kotlin	2019-05-17 14:52:48

#	User	Length	Language	Date
1	Brandon Tang	562	OCaml	2023-09-24 05:38:06
2	Alexander Cai	596	OCaml	2022-01-11 05:29:01

#	User	Length	Language	Date
1	Ingemar Ragnemalm	412	Pascal	2018-08-27 15:59:04
2	Egor Shchetinin	452	Pascal	2018-01-23 18:07:46
3	Vova Podkorytov	483	Pascal	2018-01-23 18:09:21
4	David Connolly	1207	Pascal	2017-08-25 11:10:05

#	User	Length	Language	Date
1	Susanne Ragnemalm	543	PHP	2018-04-06 18:51:30
2	G V	561	PHP	2020-01-30 03:29:38
3	Muhammad Asyraf bin Akop	939	PHP	2022-05-23 11:10:26

#	User	Length	Language	Date
1	Hakan Kjellerstrand	386	Prolog	2023-03-13 16:41:31
2	Andriy Zyevakov	572	Prolog	2019-05-05 09:22:23

#	User	Length	Language	Date
1	Thomas Feld	187	Python 2	2019-08-23 09:43:52
2	Tim Loyen	241	Python 2	2018-11-06 17:05:27
3	Harald Andersson	244	Python 2	2017-06-15 16:27:46
4	Matt Bonsall	245	Python 2	2016-10-23 21:56:18
5	Jesper Öqvist	246	Python 2	2018-10-18 00:19:47
6	Cheng Hang	251	Python 2	2017-12-05 08:13:39
7	KAVYA R eee	253	Python 2	2020-09-09 09:05:55
8	Jainesh Patel	255	Python 2	2016-10-21 18:56:12
9	Haggai Liu	261	Python 2	2017-03-29 19:33:54
10	Vifill Sverrisson	269	Python 2	2018-03-07 01:10:14

#	User	Length	Language	Date
1	Benjamin Z White	115	Python 3	2023-05-05 22:44:18
2	Morten Clausen	128	Python 3	2022-10-19 22:07:48
3	Charles Ancheta	130	Python 3	2023-03-16 10:00:06
4	Nguyên Khôi Đỗ	143	Python 3	2025-03-11 23:33:48
5	Ahmed Chamseddine	145	Python 3	2024-08-20 11:25:34
6	Farzam Abrishami	147	Python 3	2024-02-17 02:18:16
7	Kaustubh Krishna	148	Python 3	2023-11-01 17:22:24
8	Hakan Kjellerstrand	173	Python 3	2023-03-13 18:26:39
9	Thibault Raffaillac	183	Python 3	2024-08-11 14:09:15
10	Jason Cannon	184	Python 3	2019-11-08 02:36:41

#	User	Length	Language	Date
1	Thomas Feld	98	Ruby	2023-03-01 15:20:42
2	Hidden user	234	Ruby	2019-02-17 02:53:14
3	Kok Dith	248	Ruby	2021-08-27 04:01:57
4	Clement Oh	248	Ruby	2024-02-28 16:47:19
5	Lee Tze Han	252	Ruby	2018-06-29 11:11:39
6	Casper Christensen	346	Ruby	2016-06-28 17:16:53
7	Erik Rydbert	435	Ruby	2016-09-18 04:40:07

#	User	Length	Language	Date
1	Vincent Lagerros	546	Rust	2025-01-25 20:46:31
2	Bas Dirks	633	Rust	2022-01-08 20:32:43
3	Hidden user	705	Rust	2026-01-30 19:32:24
4	Joan Alegret	749	Rust	2020-08-20 09:23:52
5	Freek van Keulen	764	Rust	2022-10-02 08:27:29
6	Nick Prat	768	Rust	2021-06-23 00:38:50
7	Hidden user	788	Rust	2024-04-07 23:33:26
8	David Rasch	823	Rust	2020-11-30 10:45:22
9	Katherine Freudenhammer	894	Rust	2025-07-19 14:23:58
10	Alexandr Last	901	Rust	2023-08-21 20:45:24

Solution running time distribution