Problem A
What does the fox say? — Problem Statistics

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Submissions	12556
Accepted submissions	5567
Submission ratio	44.34%
Authors	5138
Full solves [?]	4635
Full solve Ratio	90.21%

#	User	Runtime	Language	Date
1	Niklas Huss	0.02 s	C#	2015-10-03 22:21:33
2	Andriy Zyevakov	0.02 s	C#	2015-10-05 21:45:07
3	David Bergman	0.02 s	C#	2015-10-07 23:15:16
4	Patrick Johannessen	0.02 s	C#	2015-12-16 03:02:45
5	Yuwono Bangun Nagoro	0.02 s	C#	2015-12-20 06:16:36
6	Hidden user	0.02 s	C#	2016-02-11 10:49:56
7	Joseph Dukes	0.02 s	C#	2016-02-13 19:23:01
8	Hidden user	0.02 s	C#	2016-02-19 23:27:24
9	Khin Nyunt	0.02 s	C#	2016-04-18 04:51:31
10	Joe Amenta	0.02 s	C#	2016-04-24 03:31:01

#	User	Runtime	Language	Date
1	David Cawthon	0.02 s	Common Lisp	2019-05-11 15:03:40

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.04 s	F#	2023-01-06 22:22:21

#	User	Runtime	Language	Date
1	Eric Martin	0.01 s	Go	2018-12-31 23:11:00
2	Krzysztof Gibuła	0.01 s	Go	2019-01-16 22:58:13
3	Cameron Otts	0.01 s	Go	2019-04-09 00:06:44
4	Theo Coyne Morgan	0.02 s	Go	2019-03-23 21:32:49
5	Ainun Nazieb	0.02 s	Go	2020-08-27 14:27:23
6	Abdurrachman Habibi	0.02 s	Go	2020-11-16 01:37:01
7	Ola Dahl	0.02 s	Go	2022-11-06 17:02:39
8	Hidden user	0.02 s	Go	2023-02-13 23:58:36
9	Isaac Arvestad	0.08 s	Go	2016-03-10 17:52:16
10	Mark Wistrom	0.08 s	Go	2017-02-23 22:21:58

#	User	Runtime	Language	Date
1	Eleanor Cheak	0.04 s	Java	2025-09-30 18:01:28
2	Marcus Kung Wei Long	0.04 s	Java	2025-10-02 16:01:45
3	Wong E Shen	0.04 s	Java	2026-03-02 10:31:45
4	Tan Xing Zhong	0.05 s	Java	2024-09-19 19:54:46
5	Jaylon Ezekiel Tan Jiong Rui	0.05 s	Java	2024-09-24 05:33:14
6	Muhammad Khaizuran Bin Mohamad Rosle	0.05 s	Java	2024-09-25 12:47:58
7	Crystal Goh Ruo Shyan	0.05 s	Java	2024-10-04 16:10:41
8	Nicholas Low Jia Le	0.05 s	Java	2024-10-04 18:13:20
9	Rayson Tay	0.05 s	Java	2024-10-06 07:15:09
10	seah joel	0.05 s	Java	2024-10-06 08:33:23

#	User	Runtime	Language	Date
1	Ismail Tahiri	0.05 s	JavaScript (Node.js)	2018-07-21 13:26:26
2	Ram Basnet	0.05 s	JavaScript (Node.js)	2018-10-05 06:18:06
3	Sander Hellesø	0.05 s	JavaScript (Node.js)	2019-04-13 11:02:10
4	Angelou Konstantinos	0.09 s	JavaScript (Node.js)	2023-05-05 12:42:57
5	Vaios Irodotou	0.09 s	JavaScript (Node.js)	2023-05-06 08:18:58
6	Matthew Montoni-Till	0.41 s	JavaScript (Node.js)	2020-02-18 03:15:19
7	Andrew Paige Schmidt	0.41 s	JavaScript (Node.js)	2020-02-20 21:07:44
8	Clayton Johnson	0.42 s	JavaScript (Node.js)	2020-01-22 20:22:04
9	Zachary Romano	0.42 s	JavaScript (Node.js)	2020-01-24 22:45:16
10	Jesse Holland	0.42 s	JavaScript (Node.js)	2020-01-29 19:15:03

#	User	Runtime	Language	Date
1	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2015-12-27 13:04:31
2	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-01-16 21:51:01
3	Cole Rauh	0.01 s	JavaScript (SpiderMonkey)	2016-10-07 19:50:19
4	Ionel Hindorean	0.01 s	JavaScript (SpiderMonkey)	2016-12-02 21:31:09
5	Nicklas Utgaard	0.01 s	JavaScript (SpiderMonkey)	2017-02-22 17:18:56
6	Mats Krüger Svensson	0.01 s	JavaScript (SpiderMonkey)	2017-02-22 17:22:20
7	Alan Delaney	0.01 s	JavaScript (SpiderMonkey)	2017-04-10 13:06:12
8	Hai Yang Xu	0.01 s	JavaScript (SpiderMonkey)	2017-09-24 04:50:04
9	Olena Yedyharova	0.01 s	JavaScript (SpiderMonkey)	2018-03-21 15:57:32
10	Goran Sherko Jawdat	0.01 s	JavaScript (SpiderMonkey)	2018-04-27 11:05:11

#	User	Runtime	Language	Date
1	Danny Robinson	0.60 s	Julia	2023-06-21 17:42:38
2	Timothy Gaede	0.66 s	Julia	2024-04-19 05:12:46

#	User	Runtime	Language	Date
1	Kiel Dowdle	0.16 s	Kotlin	2020-03-15 04:10:05
2	Jacob Huebner	0.16 s	Kotlin	2020-03-17 22:47:29
3	Thanh Le	0.16 s	Kotlin	2021-07-26 23:20:31
4	Mingda Zhao	0.18 s	Kotlin	2018-02-21 09:03:07
5	Dayan Ruben Gonzalez	0.18 s	Kotlin	2020-09-29 04:29:43
6	Ibrahim L. Mohammad	0.18 s	Kotlin	2020-11-06 14:18:34
7	James WIlliams	0.19 s	Kotlin	2020-10-01 02:41:01
8	Dmitry Shostak	0.20 s	Kotlin	2018-08-21 08:01:43
9	Marcin Wiśniowski	0.20 s	Kotlin	2018-09-28 12:29:03
10	Hidden user	0.21 s	Kotlin	2017-11-27 13:16:25

#	User	Runtime	Language	Date
1	Shiroy Sattur	0.00 s	Nim	2025-10-12 16:02:26

#	User	Runtime	Language	Date
1	Sebastian Banert	0.00 s	OCaml	2024-08-15 20:08:03

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2018-09-25 15:34:58
2	David Connolly	0.00 s	Pascal	2019-01-30 15:47:58

#	User	Runtime	Language	Date
1	Susanne Ragnemalm	0.01 s	PHP	2018-03-23 20:52:22
2	Jeff Cashion	0.01 s	PHP	2018-04-26 15:11:59
3	Jonas Lindenskov Nielsen	0.01 s	PHP	2019-10-27 18:42:57
4	Nguyen Phuoc Loc (FUG CT)	0.01 s	PHP	2023-12-23 22:22:04
5	Erik Boström	0.01 s	PHP	2023-12-27 18:55:14
6	Mohammed Yousif	0.05 s	PHP	2018-04-25 23:24:19

#	User	Runtime	Language	Date
1	Hadi Qovaizi	0.02 s	Prolog	2016-04-18 06:17:25

#	User	Runtime	Language	Date
1	Hans Rusten	0.02 s	Python 2	2015-10-28 14:37:44
2	Urban Pettersson	0.02 s	Python 2	2015-11-24 19:44:24
3	Maksym Bendeberia	0.02 s	Python 2	2016-08-29 11:51:07
4	Sven Kratz	0.02 s	Python 2	2016-10-17 06:41:34
5	Michael Bolot	0.02 s	Python 2	2016-12-07 00:19:51
6	udprogrammingteam Team	0.02 s	Python 2	2016-12-07 00:24:38
7	Ted Morin	0.02 s	Python 2	2016-12-07 00:27:08
8	Miguel Alfageme Sanchez	0.02 s	Python 2	2017-01-12 05:25:20
9	Kees van Rooijen	0.02 s	Python 2	2017-02-06 22:41:19
10	Sala Gabriel	0.02 s	Python 2	2017-05-23 00:24:34

#	User	Runtime	Language	Date
1	Nils Gustafsson	0.02 s	Python 3	2015-09-08 17:39:30
2	Johannes Agestam	0.02 s	Python 3	2015-09-08 17:53:39
3	Marika Rostvall	0.02 s	Python 3	2015-09-08 18:02:57
4	Victor Zheng	0.02 s	Python 3	2015-10-04 04:39:49
5	James Elías Sigurðarson	0.02 s	Python 3	2015-10-10 01:47:44
6	曾威凱	0.02 s	Python 3	2015-10-11 04:18:02
7	Hidden user	0.02 s	Python 3	2015-10-11 19:56:59
8	Bjarki Stefánsson	0.02 s	Python 3	2015-10-12 13:17:16
9	Markus Lidström	0.02 s	Python 3	2015-11-01 11:52:04
10	Katie McCanzie	0.02 s	Python 3	2015-11-22 01:24:02

#	User	Runtime	Language	Date
1	Casper Christensen	0.03 s	Ruby	2016-02-22 13:55:08
2	Gerry Hall	0.03 s	Ruby	2016-03-27 00:30:49
3	Lasse Berglund	0.03 s	Ruby	2016-04-14 10:01:33
4	Erik Rydbert	0.03 s	Ruby	2016-08-01 13:55:25
5	Hidden user	0.03 s	Ruby	2017-01-12 19:08:55
6	Mike Lam	0.04 s	Ruby	2018-04-24 21:57:16
7	Petro Podrezo	0.04 s	Ruby	2018-05-25 16:59:46
8	Jason Cheong-Kee-You	0.04 s	Ruby	2018-05-25 22:37:23
9	Axel Matstoms	0.04 s	Ruby	2018-08-04 22:11:22
10	Hugo Winbladh	0.04 s	Ruby	2018-08-05 22:25:24

#	User	Runtime	Language	Date
1	Lee Wittenberg	0.01 s	SNOBOL	2024-01-12 19:22:53

#	User	Runtime	Language	Date
1	Ole Martin Pettersen	0.05 s	TypeScript	2025-11-24 17:45:09

#	User	Runtime	Language	Date
1	Olle Lundmark	0.01 s	Zig	2024-11-05 18:47:41

#	User	Length	Language	Date
1	Philipp Hergenhahn	671	C	2024-12-10 00:22:35
2	Reine Reynoso	942	C	2016-04-11 04:19:22
3	Bryan Heryanto	968	C	2019-09-23 12:23:23
4	Johan Öhlin	1033	C	2017-06-27 14:45:35
5	Andrew Roberts	1104	C	2017-08-29 06:38:13
6	Sami Al Chalati	1132	C	2024-07-17 14:27:47
7	Mirel Cosulschi	1201	C	2025-03-05 08:41:54
8	Abdelmajid Essofi	1238	C	2016-09-06 14:03:08
9	PhilCampbell	1242	C	2021-02-25 12:56:41
10	Warren Mazmur	1255	C	2019-09-23 07:38:52

#	User	Length	Language	Date
1	李陆屿	569	C#	2019-05-08 20:42:02
2	Marius Løkketangen	660	C#	2017-02-22 18:14:12
3	Henrik Syverinsen	689	C#	2025-05-12 17:59:36
4	Göran Andersson	703	C#	2022-05-27 14:20:49
5	Kell Skogh	721	C#	2017-04-26 15:19:03
6	Robbe Decraemer	732	C#	2020-04-16 18:42:11
7	Hallvard Braaten	760	C#	2017-02-22 18:15:38
8	Ali Aliev	781	C#	2022-04-17 17:08:21
9	Þorsteinn Þorvaldsson	787	C#	2017-06-04 17:04:38
10	Vitaliy Pokrovskiy	818	C#	2021-09-13 15:47:57

#	User	Length	Language	Date
1	Aryaz Eghbali	397	C++	2016-01-21 02:28:51
2	Markus Mathiasen	441	C++	2021-10-04 20:40:51
3	Antonio Molina Lovett	479	C++	2016-08-07 08:58:36
4	Garðar Ingvarsson	496	C++	2019-04-08 18:19:48
5	Chase Hinesman	518	C++	2018-05-11 02:47:15
6	Hidden user	527	C++	2020-01-27 18:12:11
7	Gerald Chua	530	C++	2018-03-31 11:41:59
8	Liu Peize	531	C++	2019-03-24 12:00:17
9	Rik Bauwens	536	C++	2020-12-28 19:08:58
10	Ritchie Goldwin	539	C++	2019-06-26 09:00:40

#	User	Length	Language	Date
1	David Cawthon	748	Common Lisp	2019-05-11 15:03:40

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	936	F#	2023-01-06 22:22:21

#	User	Length	Language	Date
1	Mark Wistrom	611	Go	2017-02-23 22:21:58
2	Krzysztof Gibuła	703	Go	2019-01-16 22:58:13
3	Hidden user	714	Go	2023-02-14 00:11:33
4	Abdurrachman Habibi	723	Go	2020-11-16 01:37:01
5	Theo Coyne Morgan	770	Go	2019-03-23 21:32:49
6	Norbert Voelker	782	Go	2021-05-11 22:21:19
7	Ainun Nazieb	806	Go	2020-08-27 14:27:23
8	Cameron Otts	891	Go	2019-04-09 00:15:49
9	Eric Martin	957	Go	2018-12-31 23:11:00
10	Ola Dahl	1274	Go	2022-11-06 17:02:39

#	User	Length	Language	Date
1	Matthew A Johnson	288	Haskell	2024-05-10 14:38:48
2	Amar Topalovic	301	Haskell	2020-11-29 03:13:15
3	John Grzechowiak	435	Haskell	2017-02-27 01:55:03
4	Øyvind Almli	476	Haskell	2021-10-10 13:48:10
5	Peter Deal	494	Haskell	2016-05-16 05:05:51
6	Aurélien Pepin	513	Haskell	2019-09-08 10:45:42
7	Johan Meier	561	Haskell	2017-01-06 06:57:21
8	Qi Ji	567	Haskell	2018-06-24 12:05:43
9	Stefan Kennedy	581	Haskell	2018-11-07 14:47:08
10	gakim	598	Haskell	2021-12-01 08:25:38

#	User	Length	Language	Date
1	Hidden user	506	Java	2018-11-08 20:35:09
2	Olivia Bizimungu	535	Java	2019-01-10 15:42:01
3	Raymond Arrington	553	Java	2024-06-17 04:06:11
4	Jesse Ventura	567	Java	2016-01-21 02:24:28
5	Joshua Fair	577	Java	2018-11-09 00:29:39
6	Kurtis Van Gent	578	Java	2016-02-16 15:25:41
7	Kyle Hall	587	Java	2016-03-17 00:58:31
8	Amiel James Bornales	587	Java	2019-05-10 07:46:17
9	Salomon Smeke	606	Java	2015-10-13 06:39:14
10	Luciano Brozzi	609	Java	2025-11-04 17:53:12

#	User	Length	Language	Date
1	Allen Harper	595	JavaScript (Node.js)	2020-01-31 00:19:36
2	Julius Bendezu	714	JavaScript (Node.js)	2020-02-16 16:27:37
3	Marc Fong	799	JavaScript (Node.js)	2021-05-05 05:28:45
4	Emil Clemedson	804	JavaScript (Node.js)	2021-08-27 11:54:58
5	nandro	883	JavaScript (Node.js)	2020-11-18 18:19:24
6	Sander Hellesø	926	JavaScript (Node.js)	2019-04-13 11:02:10
7	Marius Alexander Winsjansen	990	JavaScript (Node.js)	2020-07-30 02:04:44
8	Niels De Stickere	993	JavaScript (Node.js)	2020-04-16 19:20:07
9	Ram Basnet	1011	JavaScript (Node.js)	2018-10-05 06:18:06
10	Mandala Binsar	1062	JavaScript (Node.js)	2020-12-18 07:29:53

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	298	JavaScript (SpiderMonkey)	2023-02-09 15:15:52
2	Bernard Perrin	308	JavaScript (SpiderMonkey)	2019-04-05 18:32:43
3	Jimmy Gustafsson	333	JavaScript (SpiderMonkey)	2022-09-01 10:36:25
4	Hai Yang Xu	339	JavaScript (SpiderMonkey)	2017-09-24 04:50:04
5	Simon Titkó	339	JavaScript (SpiderMonkey)	2023-12-21 21:06:51
6	Peter Menyes	347	JavaScript (SpiderMonkey)	2021-09-24 17:30:16
7	Cole Rauh	394	JavaScript (SpiderMonkey)	2016-10-07 19:50:19
8	Peter Kedemo	396	JavaScript (SpiderMonkey)	2015-12-27 13:04:31
9	Mats Krüger Svensson	508	JavaScript (SpiderMonkey)	2017-12-24 11:28:30
10	Nicklas Utgaard	542	JavaScript (SpiderMonkey)	2017-02-22 17:18:56

#	User	Length	Language	Date
1	Danny Robinson	171	Julia	2023-06-21 17:42:38
2	Timothy Gaede	1252	Julia	2024-04-19 05:12:46

#	User	Length	Language	Date
1	Hidden user	368	Kotlin	2017-11-27 13:16:25
2	Jahid Hasan Imon	427	Kotlin	2020-06-02 21:20:09
3	Mohsen Dehbashi	431	Kotlin	2019-08-08 17:01:05
4	Mohamadhassan Ebrahimi	436	Kotlin	2019-10-27 19:09:30
5	Sarek Høverstad Skotåm	440	Kotlin	2020-10-09 23:47:41
6	arda atci	468	Kotlin	2020-07-07 18:01:09
7	Dayan Ruben Gonzalez	551	Kotlin	2020-09-29 04:29:43
8	Dmitry Shostak	567	Kotlin	2018-08-21 08:01:43
9	Troy Warmboe	581	Kotlin	2020-02-20 01:02:37
10	Clinton Walker	588	Kotlin	2020-03-24 19:59:16

#	User	Length	Language	Date
1	Shiroy Sattur	319	Nim	2025-10-12 16:02:26

#	User	Length	Language	Date
1	Sebastian Banert	566	OCaml	2024-08-15 20:08:03

#	User	Length	Language	Date
1	David Connolly	1686	Pascal	2019-01-30 15:47:58
2	Ingemar Ragnemalm	10412	Pascal	2018-09-25 15:34:58

#	User	Length	Language	Date
1	Jonas Lindenskov Nielsen	445	PHP	2019-10-27 18:42:57
2	Jeff Cashion	570	PHP	2018-04-26 15:11:59
3	Mohammed Yousif	583	PHP	2018-04-25 23:24:19
4	Erik Boström	804	PHP	2023-12-27 18:55:14
5	Nguyen Phuoc Loc (FUG CT)	886	PHP	2023-12-23 22:22:04
6	Susanne Ragnemalm	1663	PHP	2018-03-23 20:52:22

#	User	Length	Language	Date
1	Hadi Qovaizi	5632	Prolog	2016-04-18 06:17:25

#	User	Length	Language	Date
1	Thomas Feld	194	Python 2	2019-08-19 14:16:06
2	Matt Bonsall	209	Python 2	2016-10-12 18:05:11
3	Hrant Hovhannisyan	210	Python 2	2018-03-28 14:09:53
4	Zara Lim	239	Python 2	2018-09-24 08:48:03
5	Noah Ó Donnaile	242	Python 2	2016-11-23 00:19:05
6	Lee Yu Choy	243	Python 2	2017-10-04 18:41:48
7	Haggai Liu	248	Python 2	2017-01-19 22:04:21
8	Mang Saswi	250	Python 2	2015-12-14 05:56:53
9	Alfred Olsson	250	Python 2	2017-04-16 18:34:40
10	Dinda Tiara	250	Python 2	2020-01-02 17:51:18

#	User	Length	Language	Date
1	Kristian Sørdal	118	Python 3	2024-01-03 10:58:46
2	Benjamin Z White	130	Python 3	2023-05-06 14:53:11
3	Taylor Rodríguez	130	Python 3	2025-01-21 06:35:40
4	Lawry Sorenson	135	Python 3	2023-08-22 07:01:28
5	Charles Ancheta	138	Python 3	2023-03-19 07:30:00
6	a_b__c	162	Python 3	2021-01-09 05:49:28
7	Rezz Tony Piraman	167	Python 3	2022-12-29 16:21:19
8	Timothy Baeckelant	167	Python 3	2024-06-29 20:22:49
9	David Worley	178	Python 3	2025-11-14 19:57:18
10	Hidden user	179	Python 3	2026-01-13 14:22:12

#	User	Length	Language	Date
1	Thomas Feld	70	Ruby	2023-01-30 11:49:10
2	Hugo Winbladh	92	Ruby	2018-08-05 22:25:24
3	Axel Matstoms	97	Ruby	2018-08-05 20:59:11
4	John Rabaey	230	Ruby	2020-04-09 21:55:42
5	Macdara mac an tSionnaigh	237	Ruby	2019-09-28 21:56:55
6	Kok Dith	237	Ruby	2021-08-23 10:39:53
7	Casper Christensen	269	Ruby	2016-02-22 13:55:08
8	Mike Lam	269	Ruby	2018-04-24 21:59:54
9	Tavin Turner	280	Ruby	2019-04-13 01:35:30
10	Hidden user	281	Ruby	2019-03-04 12:56:05

#	User	Length	Language	Date
1	Vincent Lagerros	615	Rust	2025-01-26 15:42:38
2	Emil Houlborg	657	Rust	2023-01-30 11:24:42
3	Joachim Borup	702	Rust	2023-01-30 12:37:25
4	Malte Kildelund Rosenkilde	823	Rust	2025-02-04 09:14:46
5	Isak Jägberg	857	Rust	2024-10-21 12:25:10
6	Dustin Ward	860	Rust	2024-05-01 19:16:17
7	Bas Dirks	874	Rust	2021-12-29 12:20:25
8	Andreas Just Petersen	880	Rust	2023-01-30 21:20:19
9	Joe Blower	900	Rust	2025-06-16 03:02:40
10	Malthe Mathias Mølgaard Larsen	920	Rust	2023-01-27 15:55:03

#	User	Length	Language	Date
1	Lee Wittenberg	443	SNOBOL	2024-01-12 19:22:53

#	User	Length	Language	Date
1	Ole Martin Pettersen	774	TypeScript	2025-11-24 17:45:09

#	User	Length	Language	Date
1	Olle Lundmark	4075	Zig	2024-11-05 18:47:41

Solution running time distribution