Problem A
Best Compression Ever — Problem Statistics

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Submissions	3095
Accepted submissions	1416
Submission ratio	45.75%
Authors	1309
Full solves [?]	1186
Full solve Ratio	90.60%

#	User	Runtime	Language	Date
1	Thomas Feld	0.01 s	Bash	2023-04-25 12:00:51
2	Chenzhang Hu	0.01 s	Bash	2023-11-14 14:25:53

#	User	Runtime	Language	Date
1	Simon Ståhlberg	0.01 s	C#	2014-02-10 14:31:26
2	masosz	0.01 s	C#	2015-02-28 19:50:07
3	Samuel Wrååk	0.01 s	C#	2016-09-08 19:40:27
4	Aljaž Kosmač	0.01 s	C#	2016-12-02 00:45:34
5	Khin Nyunt	0.01 s	C#	2017-01-03 18:34:03
6	Russell Kennington	0.01 s	C#	2017-02-01 01:29:33
7	Jaclyn Chang	0.01 s	C#	2017-07-03 07:16:57
8	Aabir Bahaida	0.01 s	C#	2017-09-15 10:19:06
9	Mads Storm Hansen	0.02 s	C#	2015-07-19 16:21:33
10	Robert Low	0.02 s	C#	2016-07-21 23:58:11

#	User	Runtime	Language	Date
1	Adrian Reithaug	0.03 s	F#	2022-04-09 12:49:39

#	User	Runtime	Language	Date
1	Theodor Beskow	0.00 s	Go	2026-02-07 15:17:05
2	Norbert Voelker	0.08 s	Go	2021-05-16 00:25:54

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.04 s	Java	2024-11-16 18:59:41
2	Rene Argento	0.04 s	Java	2025-03-23 18:45:08
3	Hans Gylling	0.05 s	Java	2009-10-01 00:40:52
4	Marcus Johansson	0.05 s	Java	2009-10-31 13:04:07
5	Rikard Blixt	0.05 s	Java	2014-02-10 13:26:20
6	Jens Ståhl	0.05 s	Java	2014-02-10 13:27:12
7	Tobias Andersson	0.05 s	Java	2014-02-10 13:48:52
8	Lukas Polacek	0.05 s	Java	2014-02-10 14:52:50
9	Mathias Lindblom	0.05 s	Java	2014-02-10 15:35:53
10	Sephy	0.05 s	Java	2014-03-02 17:00:46

#	User	Runtime	Language	Date
1	Ankit Agrawal	0.08 s	JavaScript (Node.js)	2022-10-20 21:46:51
2	Angelo Adams	0.42 s	JavaScript (Node.js)	2020-03-02 21:31:01
3	clement fischer	0.42 s	JavaScript (Node.js)	2020-08-06 11:07:52
4	Khin Nyunt	0.42 s	JavaScript (Node.js)	2021-09-12 17:10:56
5	Bas Dirks	0.42 s	JavaScript (Node.js)	2022-01-17 08:01:38

#	User	Runtime	Language	Date
1	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2016-10-02 10:10:20
2	Magnar Myrtveit	0.01 s	JavaScript (SpiderMonkey)	2016-12-23 23:56:37
3	Graham Fairweather	0.01 s	JavaScript (SpiderMonkey)	2017-10-11 13:08:10
4	Tyler VanHaren	0.02 s	JavaScript (SpiderMonkey)	2022-06-05 19:09:41
5	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2022-08-29 05:18:57
6	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-02-11 08:23:26

#	User	Runtime	Language	Date
1	Timothy Gaede	0.47 s	Julia	2024-06-21 05:07:47

#	User	Runtime	Language	Date
1	Neil Harmon	0.18 s	Kotlin	2019-07-17 09:11:53
2	Nicholas Johnson	0.19 s	Kotlin	2020-11-14 19:29:26
3	Adam Rankin	0.20 s	Kotlin	2023-04-28 23:07:51

#	User	Runtime	Language	Date
1	Zeheng Li	0.00 s	Lua	2023-11-25 08:39:58

#	User	Runtime	Language	Date
1	Ivan Miloslavov	0.00 s	OCaml	2020-05-21 00:40:02

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2017-09-26 09:04:43

#	User	Runtime	Language	Date
1	Viktor Mattsson	0.01 s	Prolog	2014-09-07 18:36:18
2	Andriy Zyevakov	0.02 s	Prolog	2024-11-22 08:19:54

#	User	Runtime	Language	Date
1	Kai Widell Niigata	0.02 s	Python 2	2014-02-10 15:59:32
2	Cate McCartin	0.02 s	Python 2	2014-03-22 05:53:55
3	Joakim Uddholm	0.02 s	Python 2	2014-09-04 18:03:50
4	Tore Norderud	0.02 s	Python 2	2015-04-12 23:35:27
5	Christofer Ohlsson	0.02 s	Python 2	2015-04-23 10:31:15
6	Greg Hamerly	0.02 s	Python 2	2015-05-08 02:43:22
7	Erik Odenman	0.02 s	Python 2	2015-05-15 04:55:25
8	Hidden user	0.02 s	Python 2	2015-09-09 16:56:04
9	Andreas Brytting	0.02 s	Python 2	2015-09-14 09:35:56
10	Urban Pettersson	0.02 s	Python 2	2015-10-09 19:55:49

#	User	Runtime	Language	Date
1	Mattis Kancans Envall	0.02 s	Python 3	2014-09-01 12:13:05
2	Mikael Florén	0.02 s	Python 3	2014-09-09 08:30:05
3	Hidden user	0.02 s	Python 3	2014-11-21 22:54:24
4	Robert Welin-Berger	0.02 s	Python 3	2014-12-26 16:24:55
5	Jeremy Tuloup	0.02 s	Python 3	2015-05-28 17:16:31
6	James Elías Sigurðarson	0.02 s	Python 3	2015-06-01 23:25:43
7	Alexandre Loiko	0.02 s	Python 3	2015-07-05 09:45:48
8	Alex Loiko	0.02 s	Python 3	2015-07-05 09:47:37
9	Fredrika Agestam	0.02 s	Python 3	2015-07-05 09:49:35
10	Johan Kvastad	0.02 s	Python 3	2015-09-02 16:02:41

#	User	Runtime	Language	Date
1	Casper Christensen	0.03 s	Ruby	2016-03-26 00:05:35
2	Lasse Berglund	0.03 s	Ruby	2016-03-28 12:57:25
3	Mehdi Maick	0.03 s	Ruby	2016-08-08 17:07:09
4	Thomas Feld	0.06 s	Ruby	2022-12-13 08:24:07
5	Clement Oh	0.06 s	Ruby	2023-10-31 06:51:12
6	Chenzhang Hu	0.13 s	Ruby	2025-09-22 13:44:43

#	User	Runtime	Language	Date
1	Henry Jayakusuma	0.00 s	Rust	2020-05-31 09:24:33
2	Adrian	0.00 s	Rust	2021-10-31 11:41:44
3	Eric Pinter	0.00 s	Rust	2022-05-07 19:57:35
4	David Rasch	0.00 s	Rust	2023-09-22 10:21:07
5	Vincent Lagerros	0.00 s	Rust	2024-10-12 00:26:24

#	User	Length	Language	Date
1	Thomas Feld	29	Bash	2023-09-12 15:19:53
2	Chenzhang Hu	41	Bash	2025-09-12 22:33:21

#	User	Length	Language	Date
1	Anders Mouanga	110	C	2025-09-13 02:43:58
2	Ivan Petrov	144	C	2019-06-26 14:31:02
3	Jonas Höglund	154	C	2015-09-02 15:41:28
4	April Clark	154	C	2021-09-15 14:59:20
5	Nhật Anh Võ Nguyễn	166	C	2016-03-08 15:06:51
6	Matthew Ling	171	C	2018-01-08 05:29:41
7	Ng Wei Jie	171	C	2020-02-17 14:35:33
8	Hidden user	171	C	2022-05-05 10:01:43
9	Hidden user	171	C	2022-07-22 12:10:19
10	Ab- D	171	C	2022-07-23 00:25:38

#	User	Length	Language	Date
1	traxex	222	C#	2024-05-15 12:35:48
2	Vicky Irmawan	380	C#	2020-07-23 11:56:37
3	Göran Andersson	457	C#	2022-05-27 03:24:49
4	Aabir Bahaida	497	C#	2017-09-15 10:19:06
5	Khin Nyunt	511	C#	2017-01-03 18:34:03
6	Hidden user	549	C#	2017-05-15 17:45:20
7	Aljaž Kosmač	557	C#	2016-12-02 00:45:34
8	Fabian	567	C#	2023-02-17 14:04:19
9	Robert Low	585	C#	2016-07-21 23:58:11
10	Adam Imbert	656	C#	2021-10-12 01:01:52

#	User	Length	Language	Date
1	Anders Mouanga	94	C++	2025-08-14 07:14:59
2	Johan Wind	134	C++	2014-09-28 17:56:02
3	Johan Sannemo	139	C++	2014-10-22 13:43:22
4	Syx Pek	141	C++	2016-01-17 18:50:39
5	Anshil Gandhi	152	C++	2019-06-23 03:19:42
6	Neill Johnston	153	C++	2019-01-27 01:47:34
7	Ryan Chew	153	C++	2019-03-19 18:47:27
8	AndrescuIII	153	C++	2023-11-15 09:13:12
9	Marko Lazic	155	C++	2016-12-14 23:05:55
10	Andreas Grigorjew	156	C++	2021-06-12 11:38:36

#	User	Length	Language	Date
1	Adrian Reithaug	397	F#	2022-04-09 12:49:39

#	User	Length	Language	Date
1	Theodor Beskow	303	Go	2026-02-07 15:17:05
2	Norbert Voelker	552	Go	2021-05-16 00:25:54

#	User	Length	Language	Date
1	Brent Yorgey	117	Haskell	2017-09-27 23:13:26
2	Fran Cruz Zamorano	126	Haskell	2017-07-05 21:36:41
3	Steinar Simonnes	143	Haskell	2023-11-04 13:10:31
4	Olle Eriksson	153	Haskell	2018-06-23 04:24:15
5	Atli Fannar Franklín	162	Haskell	2017-08-22 18:19:21
6	Jonas Höglund	163	Haskell	2014-10-13 00:19:23
7	Hidden user	164	Haskell	2015-03-19 04:08:23
8	Martin Jackson	175	Haskell	2017-05-14 02:26:04
9	Anthony Clark	179	Haskell	2017-03-03 06:00:39
10	Qi Ji	183	Haskell	2019-02-23 20:56:17

#	User	Length	Language	Date
1	Max Dietrich	231	Java	2014-03-24 01:13:38
2	Viktor Mattsson	237	Java	2014-09-04 19:08:45
3	Stela Palii	273	Java	2017-11-24 07:01:56
4	Mohammad Naufal Hazim Bin Saharudin	278	Java	2025-05-16 11:37:44
5	Paul Boddington	280	Java	2016-04-30 00:58:52
6	Azael Zamora	285	Java	2020-03-09 18:41:43
7	John Copley	290	Java	2017-12-21 21:47:54
8	Khin Nyunt	293	Java	2017-11-09 08:04:57
9	Sam Huynh	293	Java	2022-02-24 02:52:13
10	Trush Patel	302	Java	2022-01-14 20:20:03

#	User	Length	Language	Date
1	Ankit Agrawal	316	JavaScript (Node.js)	2022-10-20 21:46:51
2	Angelo Adams	370	JavaScript (Node.js)	2020-03-02 21:31:01
3	clement fischer	371	JavaScript (Node.js)	2020-08-06 11:07:52
4	Bas Dirks	408	JavaScript (Node.js)	2022-01-17 08:01:38
5	Khin Nyunt	449	JavaScript (Node.js)	2021-09-12 17:10:56

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	90	JavaScript (SpiderMonkey)	2023-02-11 08:23:26
2	Bjørn Chr. Soltvedt	104	JavaScript (SpiderMonkey)	2022-08-29 05:18:57
3	Graham Fairweather	132	JavaScript (SpiderMonkey)	2017-10-11 13:08:10
4	Tyler VanHaren	164	JavaScript (SpiderMonkey)	2022-06-05 19:09:41
5	Magnar Myrtveit	205	JavaScript (SpiderMonkey)	2016-12-23 23:56:37
6	Peter Kedemo	956	JavaScript (SpiderMonkey)	2016-10-02 10:10:20

#	User	Length	Language	Date
1	Timothy Gaede	190	Julia	2024-06-21 05:07:47

#	User	Length	Language	Date
1	Nicholas Johnson	145	Kotlin	2020-11-14 19:29:26
2	Adam Rankin	432	Kotlin	2023-04-28 23:07:51
3	Neil Harmon	539	Kotlin	2019-07-17 09:11:53

#	User	Length	Language	Date
1	Zeheng Li	104	Lua	2023-11-25 08:39:58

#	User	Length	Language	Date
1	Ivan Miloslavov	263	OCaml	2020-05-21 00:40:02

#	User	Length	Language	Date
1	Ingemar Ragnemalm	662	Pascal	2017-09-26 09:04:43

#	User	Length	Language	Date
1	Viktor Mattsson	269	Prolog	2014-09-07 18:36:18
2	Andriy Zyevakov	2648	Prolog	2024-11-22 08:19:54

#	User	Length	Language	Date
1	Thomas Feld	62	Python 2	2019-09-16 12:54:54
2	Jesper Öqvist	73	Python 2	2018-10-27 10:32:22
3	Erik Odenman	74	Python 2	2015-05-15 04:55:25
4	Philipp R	76	Python 2	2017-06-30 20:23:14
5	Hidden user	78	Python 2	2017-11-02 19:19:04
6	Tommy Tang	81	Python 2	2017-02-11 20:39:13
7	Paulo Bu	83	Python 2	2015-03-23 14:05:21
8	Zbigniew Winiarski	83	Python 2	2015-10-25 19:12:16
9	Lars Åström	83	Python 2	2019-10-16 10:44:55
10	Paul Liu	86	Python 2	2017-02-11 21:34:29

#	User	Length	Language	Date
1	Lee Isaac	57	Python 3	2022-11-08 18:54:13
2	Benjamin Z White	57	Python 3	2023-05-02 11:42:13
3	Clement Oh	57	Python 3	2023-05-06 08:22:09
4	Frans Meulenbroeks	57	Python 3	2025-03-07 22:34:22
5	Thomas Draper	58	Python 3	2023-07-25 00:23:30
6	Morten Clausen	59	Python 3	2022-10-08 00:22:50
7	Charles Ancheta	60	Python 3	2023-03-24 08:27:33
8	David Aldenbro	60	Python 3	2025-10-15 17:02:31
9	Si Jie Tan	60	Python 3	2025-12-12 13:11:16
10	Hidden user	61	Python 3	2021-01-11 14:53:15

#	User	Length	Language	Date
1	Thomas Feld	47	Ruby	2022-12-13 08:24:07
2	Clement Oh	64	Ruby	2023-10-31 06:51:12
3	Mehdi Maick	87	Ruby	2016-08-08 17:07:09
4	Chenzhang Hu	145	Ruby	2025-09-22 13:44:43
5	Casper Christensen	178	Ruby	2016-03-26 00:05:35
6	Lasse Berglund	179	Ruby	2016-03-28 12:57:25

#	User	Length	Language	Date
1	Vincent Lagerros	166	Rust	2024-10-12 00:27:13
2	David Rasch	372	Rust	2023-09-22 10:21:07
3	Henry Jayakusuma	378	Rust	2020-05-31 09:24:33
4	Adrian	521	Rust	2021-10-31 11:41:44
5	Eric Pinter	1126	Rust	2022-05-07 19:57:35

Solution running time distribution