Problem A
Reverse Rot — Problem Statistics

Back to problem description

Submissions	6862
Accepted submissions	3952
Submission ratio	57.59%
Authors	3856
Full solves [?]	3620
Full solve Ratio	93.88%

#	User	Runtime	Language	Date
1	Robert Kyrk	0.01 s	C#	2017-01-06 22:04:44
2	Ludwig Hedeby	0.01 s	C#	2017-11-30 13:06:46
3	Jonah Heller	0.01 s	C#	2018-03-13 18:09:41
4	Jens Mossig	0.02 s	C#	2015-10-20 17:24:27
5	Faisal Rahman	0.02 s	C#	2016-01-17 10:33:19
6	Jay Hal	0.02 s	C#	2016-02-08 21:34:54
7	Luiz Miranda	0.02 s	C#	2016-04-02 18:15:00
8	Joe Amenta	0.02 s	C#	2016-04-04 21:52:15
9	Robin Grönholm	0.02 s	C#	2016-04-30 23:14:10
10	Raja Sanjeev Kumar Nakka	0.02 s	C#	2016-05-04 17:20:58

#	User	Runtime	Language	Date
1	Nicholas Lantz	0.02 s	Common Lisp	2019-04-24 20:02:42
2	David Cawthon	0.02 s	Common Lisp	2019-04-27 00:56:55

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.05 s	F#	2022-07-16 08:03:03

#	User	Runtime	Language	Date
1	Krzysztof Gibuła	0.02 s	Go	2019-02-18 13:24:02
2	Hidden user	0.02 s	Go	2020-09-17 06:21:07
3	Sindhu vannemreddy	0.02 s	Go	2021-01-01 18:23:32
4	Eric Graham	0.07 s	Go	2018-09-20 03:49:03
5	Kyle Wormstadt	0.07 s	Go	2018-09-21 04:37:24
6	Sebastian Porling	0.07 s	Go	2018-09-25 21:25:05
7	Alejandro Germain	0.07 s	Go	2018-10-21 15:29:59
8	Ian Howell	0.08 s	Go	2016-05-28 16:29:19
9	Jonas S	0.08 s	Go	2017-01-10 15:50:21
10	Adam Smith	0.08 s	Go	2017-03-02 23:35:08

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	Java	2025-02-08 13:04:46
2	Guangyi Zhou	0.04 s	Java	2025-03-03 07:40:48
3	Nick Wu	0.05 s	Java	2015-10-10 17:02:12
4	Erik Baalhuis	0.05 s	Java	2015-10-10 17:12:40
5	Hidden user	0.05 s	Java	2015-10-10 17:41:39
6	Dennis Ang	0.05 s	Java	2015-10-11 09:43:40
7	Luu Nhat Phi	0.05 s	Java	2015-10-11 13:38:20
8	Brandon Morris	0.05 s	Java	2015-10-12 12:54:53
9	Jan Bananberg	0.05 s	Java	2015-10-15 20:48:24
10	Muhamed Retkoceri	0.05 s	Java	2015-10-26 01:51:57

#	User	Runtime	Language	Date
1	Daniel Roeven	0.05 s	JavaScript (Node.js)	2019-05-02 19:04:45
2	James Zhao	0.05 s	JavaScript (Node.js)	2019-05-03 23:23:15
3	Hidden user	0.05 s	JavaScript (Node.js)	2024-08-31 00:25:28
4	Sander Hellesø	0.06 s	JavaScript (Node.js)	2019-04-29 20:53:47
5	John	0.09 s	JavaScript (Node.js)	2022-07-17 06:53:46
6	Hidden user	0.40 s	JavaScript (Node.js)	2019-08-06 10:17:26
7	Oliver Bredenberg	0.40 s	JavaScript (Node.js)	2019-08-28 12:31:16
8	Chris Wong	0.41 s	JavaScript (Node.js)	2021-02-19 21:43:51
9	Francois Pichot	0.42 s	JavaScript (Node.js)	2020-01-17 23:36:33
10	Andoko Chandra	0.42 s	JavaScript (Node.js)	2020-10-09 11:12:54

#	User	Runtime	Language	Date
1	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2015-12-21 23:21:35
2	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-01-12 09:12:42
3	Tim Oram	0.01 s	JavaScript (SpiderMonkey)	2016-03-19 21:20:21
4	Adam Murphy	0.01 s	JavaScript (SpiderMonkey)	2016-03-29 00:21:18
5	Johannes Jensen	0.01 s	JavaScript (SpiderMonkey)	2016-03-29 13:04:29
6	Tor Nordqvist	0.01 s	JavaScript (SpiderMonkey)	2016-10-25 14:53:00
7	Ionel Hindorean	0.01 s	JavaScript (SpiderMonkey)	2016-11-12 11:03:27
8	Geir Magne Karlsen	0.01 s	JavaScript (SpiderMonkey)	2017-01-19 13:44:52
9	Peter Menyes	0.01 s	JavaScript (SpiderMonkey)	2017-08-26 18:49:41
10	Hai Yang Xu	0.01 s	JavaScript (SpiderMonkey)	2017-09-24 02:22:29

#	User	Runtime	Language	Date
1	Danny Robinson	0.82 s	Julia	2023-09-05 16:44:26
2	Timothy Gaede	0.82 s	Julia	2024-03-28 02:53:11

#	User	Runtime	Language	Date
1	Jacob Huebner	0.15 s	Kotlin	2020-03-17 21:35:15
2	Patrik Lilja	0.16 s	Kotlin	2018-02-19 20:18:17
3	Dayan Ruben Gonzalez	0.18 s	Kotlin	2020-10-01 17:37:34
4	Christian Epping	0.19 s	Kotlin	2018-09-19 08:42:07
5	Adam Rankin	0.19 s	Kotlin	2023-05-03 21:01:39
6	Dmitry Shostak	0.20 s	Kotlin	2018-08-20 07:58:45
7	Neil Harmon	0.20 s	Kotlin	2019-04-04 07:33:37
8	Jonathan Soo	0.21 s	Kotlin	2019-06-21 07:00:35
9	Troy Warmboe	0.24 s	Kotlin	2020-02-08 14:12:41

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Odin	2025-06-10 21:07:36

#	User	Runtime	Language	Date
1	羅棨洭5A14 Law Kai Hong	0.00 s	Pascal	2018-10-08 13:09:57
2	David Connolly	0.00 s	Pascal	2022-04-08 13:24:40

#	User	Runtime	Language	Date
1	Charles Reiss	0.00 s	Perl	2024-09-24 23:28:54

#	User	Runtime	Language	Date
1	Mgh Et	0.01 s	PHP	2015-10-10 17:57:50
2	Martin Dibakar Björling	0.01 s	PHP	2015-11-25 16:26:23
3	Silvena Lam	0.01 s	PHP	2016-02-10 13:40:59
4	Steven D. Wilson	0.01 s	PHP	2016-03-17 03:45:23
5	Ali Pandidan	0.01 s	PHP	2016-11-15 18:28:02
6	Jonas Lindenskov Nielsen	0.01 s	PHP	2019-09-01 17:03:46
7	Helbin Grégory	0.01 s	PHP	2020-09-09 13:12:33
8	cojonas1	0.01 s	PHP	2021-01-26 10:39:36
9	Renate	0.01 s	PHP	2021-06-20 20:54:56
10	Andre Wahyudi	0.01 s	PHP	2023-03-15 07:11:58

#	User	Runtime	Language	Date
1	Hadi Qovaizi	0.01 s	Prolog	2016-05-07 17:27:54
2	Andriy Zyevakov	0.01 s	Prolog	2019-04-13 04:59:32
3	Hakan Kjellerstrand	0.02 s	Prolog	2023-02-06 18:50:27

#	User	Runtime	Language	Date
1	Asger Hautop Drewsen	0.02 s	Python 2	2015-11-03 19:23:57
2	Tore Norderud	0.02 s	Python 2	2015-11-12 02:04:32
3	Nan Jiang	0.02 s	Python 2	2015-12-20 19:48:32
4	Urban Pettersson	0.02 s	Python 2	2016-02-01 19:32:29
5	Scott Handelman	0.02 s	Python 2	2016-04-15 01:55:13
6	Maksym Bendeberia	0.02 s	Python 2	2016-08-20 15:25:56
7	Martin Jackson	0.02 s	Python 2	2016-08-25 22:01:40
8	Xiao Xin	0.02 s	Python 2	2016-08-31 04:48:07
9	Lars Lindgren	0.02 s	Python 2	2016-09-28 17:53:13
10	Ryan Lindsey	0.02 s	Python 2	2016-10-02 20:08:30

#	User	Runtime	Language	Date
1	Jim Zhang	0.02 s	Python 3	2015-10-10 17:18:21
2	Hunter Herman	0.02 s	Python 3	2015-10-10 17:40:10
3	Theodore Derego	0.02 s	Python 3	2015-10-10 18:06:04
4	Johnson Zhong	0.02 s	Python 3	2015-10-10 18:27:20
5	Neil Girdhar	0.02 s	Python 3	2015-10-10 18:33:25
6	So Kimsu	0.02 s	Python 3	2015-10-10 19:17:59
7	Susan Fox	0.02 s	Python 3	2015-10-10 19:19:41
8	Trung Nguyen	0.02 s	Python 3	2015-10-10 20:20:47
9	Emil Riis Hansen	0.02 s	Python 3	2015-10-15 09:57:12
10	Frederik Højholt	0.02 s	Python 3	2015-10-17 13:51:35

#	User	Runtime	Language	Date
1	Jinwoo Lee	0.22 s	Racket	2025-02-01 19:02:49

#	User	Runtime	Language	Date
1	Casper Christensen	0.03 s	Ruby	2015-12-31 14:13:02
2	Gerry Hall	0.03 s	Ruby	2016-03-27 19:52:54
3	Lasse Berglund	0.03 s	Ruby	2016-03-28 10:20:03
4	Kellen Watt	0.03 s	Ruby	2016-04-17 04:00:40
5	Erik Rydbert	0.03 s	Ruby	2016-07-07 14:46:09
6	Jeff Matocha	0.03 s	Ruby	2016-10-18 03:56:39
7	Kevin Suwala	0.03 s	Ruby	2017-01-08 21:08:34
8	Hidden user	0.03 s	Ruby	2017-05-07 07:08:44
9	Clifford Owino	0.03 s	Ruby	2017-05-25 04:19:22
10	Charlie Egan	0.03 s	Ruby	2017-05-26 15:33:20

#	User	Runtime	Language	Date
1	Dayan Darias	0.04 s	TypeScript	2025-04-17 18:03:24

#	User	Length	Language	Date
1	Martin Blom	251	C	2024-01-09 09:25:26
2	Ehsan Shoja	495	C	2018-06-28 15:54:47
3	Ximun Castoreo	515	C	2020-10-15 08:20:30
4	Donikon Fajar	523	C	2018-11-12 06:01:01
5	Mathias Lind	547	C	2019-09-27 13:27:11
6	Joakim Blikstad	548	C	2015-11-02 11:49:54
7	Raphael Alexander	551	C	2022-01-24 22:38:23
8	Daniel Widjaja	575	C	2020-10-05 17:58:55
9	Matthew Weston	576	C	2022-01-17 15:21:00
10	官毓韋	592	C	2018-09-29 12:25:10

#	User	Length	Language	Date
1	Göran Andersson	602	C#	2022-05-13 14:54:05
2	Khin Nyunt	657	C#	2016-09-22 05:38:44
3	李陆屿	671	C#	2019-05-07 10:52:13
4	Fernanda Ferrer Ortega	686	C#	2023-05-05 16:33:09
5	María José López Sánchez	697	C#	2023-04-28 15:21:49
6	Kunwei Zhang	702	C#	2018-02-06 06:49:09
7	John Ladera	718	C#	2018-04-28 15:04:31
8	AnVi	718	C#	2020-09-28 12:34:20
9	Who Knows	718	C#	2020-11-29 15:02:46
10	Kalle Hansen	718	C#	2021-04-20 19:56:32

#	User	Length	Language	Date
1	Admasu Abera	263	C++	2021-06-15 07:58:10
2	Johan Wind	300	C++	2015-11-30 12:38:23
3	妹様万歳	309	C++	2020-03-04 08:57:24
4	Lee Hoon Nguyễn	338	C++	2018-10-17 02:30:46
5	Steven Tang	338	C++	2020-12-16 06:35:24
6	Bryan Wong Wei Heng	340	C++	2020-03-24 18:00:28
7	Clement Oh	343	C++	2023-10-02 03:31:09
8	Никита Кулик	346	C++	2022-08-12 10:28:24
9	Hidden user	355	C++	2016-04-28 16:29:15
10	Hugo Eberhard	358	C++	2016-05-02 18:53:48

#	User	Length	Language	Date
1	David Cawthon	539	Common Lisp	2019-04-27 00:56:55
2	Nicholas Lantz	762	Common Lisp	2019-04-24 20:02:42

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	708	F#	2022-07-16 08:03:03

#	User	Length	Language	Date
1	Wojtek Bednarzak	441	Go	2018-04-30 22:41:07
2	Krzysztof Gibuła	726	Go	2019-02-18 13:24:02
3	Ian Howell	818	Go	2016-05-28 16:29:19
4	Sebastian Porling	819	Go	2018-09-25 21:25:05
5	Adam Smith	825	Go	2017-03-02 23:35:08
6	Eric Graham	849	Go	2018-09-20 03:49:03
7	Alejandro Germain	920	Go	2018-10-21 15:29:59
8	Sindhu vannemreddy	922	Go	2021-01-01 18:23:32
9	Kyle Wormstadt	943	Go	2018-09-21 04:37:24
10	Hidden user	979	Go	2017-12-08 00:16:29

#	User	Length	Language	Date
1	David Wärn	259	Haskell	2015-10-25 13:42:21
2	Zach Tschetter	262	Haskell	2019-04-21 19:36:22
3	Peter Deal	280	Haskell	2016-05-07 03:46:47
4	Steinar Simonnes	315	Haskell	2023-09-30 21:42:30
5	Matthew Johnson	354	Haskell	2017-01-27 06:43:45
6	Jean-Alexandre Barszcz	368	Haskell	2018-10-16 22:26:57
7	Fran Cruz Zamorano	389	Haskell	2018-08-31 18:51:04
8	Anthony Clark	392	Haskell	2017-03-03 00:07:09
9	Carl Agrell	434	Haskell	2016-09-28 12:59:43
10	Sebastian Banert	434	Haskell	2023-10-05 17:23:51

#	User	Length	Language	Date
1	Anass Filali	488	Java	2016-09-24 09:58:08
2	Anirudh Rahul	501	Java	2016-08-07 05:20:48
3	Raymond Arrington	502	Java	2024-06-18 02:38:41
4	Iqrar Agalosi Nureyza	503	Java	2019-04-06 16:22:30
5	Hidden user	504	Java	2020-06-16 13:20:54
6	Robert Slutsky	509	Java	2017-06-26 20:46:12
7	Ayoub El Yaquine	510	Java	2016-12-01 22:11:32
8	Emilie Hyslop	510	Java	2021-01-09 22:10:05
9	Brian Scott	511	Java	2016-09-14 21:58:07
10	Rahul Shanmugham	511	Java	2020-02-28 19:57:31

#	User	Length	Language	Date
1	Daniel Roeven	577	JavaScript (Node.js)	2019-05-02 19:04:45
2	James Zhao	734	JavaScript (Node.js)	2019-05-03 23:23:15
3	Hidden user	883	JavaScript (Node.js)	2023-08-20 20:17:36
4	Francois Pichot	931	JavaScript (Node.js)	2020-01-17 23:36:33
5	Hidden user	936	JavaScript (Node.js)	2019-08-06 10:17:26
6	Chris Wong	977	JavaScript (Node.js)	2021-02-19 21:43:51
7	Khin Nyunt	1086	JavaScript (Node.js)	2021-11-29 10:42:38
8	Howard Tin Chi Chan	1129	JavaScript (Node.js)	2021-02-19 20:56:08
9	Andoko Chandra	1211	JavaScript (Node.js)	2020-10-09 11:12:54
10	Sander Hellesø	1272	JavaScript (Node.js)	2019-04-29 20:53:47

#	User	Length	Language	Date
1	Jimmy Gustafsson	185	JavaScript (SpiderMonkey)	2024-06-16 21:52:23
2	Peter Menyes	290	JavaScript (SpiderMonkey)	2017-08-26 18:58:47
3	Johannes Jensen	346	JavaScript (SpiderMonkey)	2016-03-29 13:04:29
4	Peter Kedemo	368	JavaScript (SpiderMonkey)	2015-12-21 23:21:35
5	Casey Smith	431	JavaScript (SpiderMonkey)	2019-05-22 18:59:25
6	Hai Yang Xu	518	JavaScript (SpiderMonkey)	2017-09-24 02:22:29
7	Evan Magill	518	JavaScript (SpiderMonkey)	2024-04-26 01:19:01
8	Davíð Helgason	544	JavaScript (SpiderMonkey)	2019-06-20 21:35:14
9	Andrea Bianchessi	548	JavaScript (SpiderMonkey)	2018-08-27 12:17:11
10	Ionel Hindorean	569	JavaScript (SpiderMonkey)	2016-11-12 11:03:27

#	User	Length	Language	Date
1	Danny Robinson	120	Julia	2023-09-05 16:44:26
2	Timothy Gaede	851	Julia	2024-03-28 02:53:11

#	User	Length	Language	Date
1	Adam Rankin	345	Kotlin	2023-05-03 21:01:39
2	Jonathan Soo	422	Kotlin	2019-06-21 07:00:35
3	Dmitry Shostak	499	Kotlin	2018-08-20 07:58:45
4	Troy Warmboe	506	Kotlin	2020-02-08 14:12:41
5	Dayan Ruben Gonzalez	567	Kotlin	2020-10-01 17:37:34
6	Patrik Lilja	693	Kotlin	2018-02-19 20:18:17
7	Christian Epping	743	Kotlin	2018-09-19 08:42:07
8	Neil Harmon	764	Kotlin	2019-04-04 07:33:37
9	Jacob Huebner	828	Kotlin	2020-03-17 21:35:15

#	User	Length	Language	Date
1	Hidden user	821	Odin	2025-06-10 21:07:36

#	User	Length	Language	Date
1	David Connolly	675	Pascal	2022-04-08 13:24:40
2	羅棨洭5A14 Law Kai Hong	710	Pascal	2018-10-08 13:09:57

#	User	Length	Language	Date
1	Charles Reiss	68	Perl	2024-09-24 23:39:28

#	User	Length	Language	Date
1	Steven D. Wilson	401	PHP	2016-03-17 03:45:23
2	Silvena Lam	447	PHP	2016-02-10 13:40:59
3	Renate	517	PHP	2021-06-20 20:54:56
4	Ali Pandidan	551	PHP	2016-11-15 18:28:02
5	cojonas1	567	PHP	2021-01-26 10:39:36
6	Mgh Et	573	PHP	2015-10-10 17:57:50
7	Jonas Lindenskov Nielsen	843	PHP	2019-09-01 17:03:46
8	Martin Dibakar Björling	1035	PHP	2015-11-25 16:26:23
9	Andre Wahyudi	1078	PHP	2023-03-15 07:11:58
10	Helbin Grégory	1440	PHP	2020-09-09 13:12:33

#	User	Length	Language	Date
1	Hakan Kjellerstrand	524	Prolog	2023-02-06 18:50:27
2	Andriy Zyevakov	1258	Prolog	2019-04-13 04:59:32
3	Hadi Qovaizi	5981	Prolog	2016-05-07 17:27:54

#	User	Length	Language	Date
1	KALAJAYANTHI M	172	Python 2	2025-10-12 06:31:26
2	Thomas Feld	186	Python 2	2019-08-19 11:15:58
3	Conor McCauley	213	Python 2	2019-03-20 06:49:37
4	Hidden user	213	Python 2	2019-11-24 16:06:20
5	Asger Hautop Drewsen	218	Python 2	2015-11-03 19:23:57
6	Miguel Alfageme Sanchez	237	Python 2	2017-02-03 20:15:31
7	Andrew Yang	237	Python 2	2017-04-06 22:20:23
8	Tore Norderud	238	Python 2	2015-11-12 02:04:32
9	Kristmundur Agust	243	Python 2	2016-02-09 18:01:57
10	Jeff Robertson	247	Python 2	2017-10-11 21:57:43

#	User	Length	Language	Date
1	Charles Ancheta	131	Python 3	2023-04-07 20:37:12
2	Harry Zhang	133	Python 3	2022-12-21 19:45:10
3	Morten Clausen	134	Python 3	2022-10-24 21:41:06
4	Adam Levav	136	Python 3	2023-01-25 00:49:24
5	Nate Baker	142	Python 3	2025-10-14 19:34:38
6	Lawry Sorenson	143	Python 3	2023-07-14 22:11:38
7	Tai Tze Kin	150	Python 3	2024-05-01 19:31:58
8	Hidden user	165	Python 3	2020-02-19 06:32:01
9	Zayar Htet	167	Python 3	2020-02-19 06:39:46
10	Eduardo Vicente Petry	168	Python 3	2023-01-10 07:18:05

#	User	Length	Language	Date
1	Jinwoo Lee	1040	Racket	2025-02-01 19:02:49

#	User	Length	Language	Date
1	Thomas Feld	67	Ruby	2024-10-14 09:38:05
2	Régis Hanol	196	Ruby	2022-01-17 17:30:13
3	Charlie Egan	240	Ruby	2017-05-26 15:33:20
4	Hidden user	244	Ruby	2017-10-02 10:41:34
5	Gerry Hall	246	Ruby	2016-03-27 19:52:54
6	Casper Christensen	254	Ruby	2015-12-31 14:13:02
7	Kevin Suwala	265	Ruby	2017-01-08 21:08:34
8	Clifford Owino	333	Ruby	2017-05-25 04:19:22
9	Abolfazl Gol	333	Ruby	2018-08-01 06:11:59
10	Macdara mac an tSionnaigh	338	Ruby	2019-09-14 13:28:58

#	User	Length	Language	Date
1	David Zacek	526	Rust	2021-05-29 12:29:41
2	Vincent Lagerros	607	Rust	2025-02-06 01:41:18
3	Emil Dichmann	736	Rust	2025-09-20 13:29:21
4	Chaoyi Yin	789	Rust	2019-03-27 18:43:26
5	Hidden user	790	Rust	2019-05-04 20:45:47
6	Pankajkumar Patro	798	Rust	2024-11-09 14:44:46
7	Hidden user	811	Rust	2021-02-23 11:44:07
8	Joshua Ji	885	Rust	2020-10-26 04:05:49
9	Kok Dith	901	Rust	2021-08-11 09:56:28
10	Bas Dirks	995	Rust	2022-01-03 08:20:43

#	User	Length	Language	Date
1	Dayan Darias	3841	TypeScript	2025-04-17 18:03:24

Solution running time distribution