Problem A
Volim — Problem Statistics

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Submissions	6552
Accepted submissions	3111
Submission ratio	47.48%
Authors	3004
Full solves [?]	2854
Full solve Ratio	95.01%

#	User	Runtime	Language	Date
1	Danny Robinson	0.01 s	Bash	2023-09-04 18:04:19

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	C#	2017-11-23 18:10:30
2	masosz	0.02 s	C#	2015-04-13 22:31:21
3	Mads Storm Hansen	0.02 s	C#	2015-07-18 12:54:06
4	Jonas S	0.02 s	C#	2015-08-20 12:46:54
5	Daniel Jansson	0.02 s	C#	2016-02-10 19:32:03
6	Andreas Jansson	0.02 s	C#	2016-02-29 17:11:02
7	Raja Sanjeev Kumar Nakka	0.02 s	C#	2016-04-25 19:40:59
8	Yé Wai Yan	0.02 s	C#	2016-05-14 09:50:57
9	Pontus Magnusson	0.02 s	C#	2016-06-04 16:37:58
10	Patrick Sjöö	0.02 s	C#	2016-06-14 06:20:43

#	User	Runtime	Language	Date
1	David Cawthon	0.01 s	Common Lisp	2020-09-13 07:35:37

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.04 s	F#	2022-07-10 18:05:19

#	User	Runtime	Language	Date
1	Husain Satan	0.00 s	Go	2023-12-27 09:14:52
2	Jimmy Nejtron	0.00 s	Go	2024-12-27 11:00:23
3	Hidden user	0.02 s	Go	2019-10-20 18:12:15
4	Krzysztof Gibuła	0.07 s	Go	2019-02-15 23:41:55
5	Sergey Jakobsen	0.07 s	Go	2022-01-02 21:03:13
6	Ian Howell	0.08 s	Go	2016-05-23 04:51:43
7	Hidden user	0.08 s	Go	2016-05-27 15:56:42
8	Adam Smith	0.08 s	Go	2017-03-14 00:57:12
9	Norbert Voelker	0.08 s	Go	2021-04-20 01:04:27

#	User	Runtime	Language	Date
1	Amy Colpitts	0.04 s	Java	2024-08-12 14:52:10
2	Taras Romanyuk	0.04 s	Java	2024-12-08 22:35:03
3	CUX "INDIO" PRADA	0.04 s	Java	2024-12-24 18:18:06
4	Tarek	0.04 s	Java	2025-10-08 13:07:24
5	Erik Odenman	0.05 s	Java	2014-02-06 17:44:39
6	Jens Ståhl	0.05 s	Java	2014-02-06 17:56:21
7	Anders Ye	0.05 s	Java	2014-02-06 17:58:38
8	Nathaniel Lahn	0.05 s	Java	2015-08-27 20:05:50
9	Dennis Ang	0.05 s	Java	2015-09-24 13:09:29
10	Pål Forsberg	0.05 s	Java	2015-10-08 16:22:49

#	User	Runtime	Language	Date
1	Carl Sundvall	0.05 s	JavaScript (Node.js)	2018-11-12 13:16:42
2	Sander Hellesø	0.05 s	JavaScript (Node.js)	2019-04-29 01:59:58
3	Hidden user	0.05 s	JavaScript (Node.js)	2024-09-19 20:27:40
4	Chris Wong	0.41 s	JavaScript (Node.js)	2021-02-15 16:25:58
5	john zwarts	0.42 s	JavaScript (Node.js)	2020-04-15 14:14:26
6	Andoko Chandra	0.42 s	JavaScript (Node.js)	2020-10-08 21:41:19
7	John	0.42 s	JavaScript (Node.js)	2021-03-10 04:52:14
8	Niamh Limerick	0.42 s	JavaScript (Node.js)	2022-04-12 15:58:25

#	User	Runtime	Language	Date
1	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2015-12-21 01:40:59
2	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-01-28 17:24:31
3	Johannes Jensen	0.01 s	JavaScript (SpiderMonkey)	2016-03-31 20:05:45
4	J M	0.01 s	JavaScript (SpiderMonkey)	2016-10-28 13:16:39
5	Tor Nordqvist	0.01 s	JavaScript (SpiderMonkey)	2016-11-05 22:30:18
6	Love Almgren	0.01 s	JavaScript (SpiderMonkey)	2016-11-19 16:38:55
7	Davíð Helgason	0.01 s	JavaScript (SpiderMonkey)	2017-08-07 22:51:04
8	Peter Menyes	0.01 s	JavaScript (SpiderMonkey)	2017-08-11 13:28:56
9	Nicklas Utgaard	0.01 s	JavaScript (SpiderMonkey)	2017-10-12 17:36:59
10	Steffen Stenersen	0.01 s	JavaScript (SpiderMonkey)	2017-10-12 17:49:06

#	User	Runtime	Language	Date
1	Timothy Gaede	0.55 s	Julia	2024-04-03 07:01:08
2	Danny Robinson	0.57 s	Julia	2023-09-04 17:59:33

#	User	Runtime	Language	Date
1	Dayan Ruben Gonzalez	0.14 s	Kotlin	2020-09-28 02:42:38
2	Ahmed Waseem Saeed	0.18 s	Kotlin	2022-05-22 22:38:09
3	Adam Rankin	0.18 s	Kotlin	2023-08-26 00:10:24
4	Neil Harmon	0.19 s	Kotlin	2019-04-03 14:34:17
5	axl	0.20 s	Kotlin	2019-08-05 14:47:29
6	Dmitry Shostak	0.20 s	Kotlin	2019-08-30 08:08:54
7	Troy Warmboe	0.22 s	Kotlin	2020-02-09 15:39:04

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Odin	2025-05-08 22:07:19

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2018-03-02 20:07:04
2	Hoang Duong	0.00 s	Pascal	2018-03-29 19:22:14
3	David Connolly	0.00 s	Pascal	2022-04-12 11:44:47

#	User	Runtime	Language	Date
1	Silvena Lam	0.01 s	PHP	2016-02-11 04:54:36
2	Steven D. Wilson	0.01 s	PHP	2016-03-27 07:51:37
3	Hidden user	0.01 s	PHP	2019-03-27 16:19:34
4	Petr Trofimov	0.01 s	PHP	2021-04-25 10:57:16
5	Renate	0.01 s	PHP	2021-07-05 02:33:07
6	Andre Wahyudi	0.01 s	PHP	2022-10-20 05:29:47

#	User	Runtime	Language	Date
1	Hadi Qovaizi	0.01 s	Prolog	2016-04-22 23:51:44
2	Andriy Zyevakov	0.01 s	Prolog	2016-11-28 15:39:35
3	Hakan Kjellerstrand	0.02 s	Prolog	2023-02-24 08:21:10

#	User	Runtime	Language	Date
1	Paulo Bu	0.02 s	Python 2	2015-03-23 16:17:47
2	Christofer Ohlsson	0.02 s	Python 2	2015-04-10 12:15:37
3	Nick Wu	0.02 s	Python 2	2015-10-15 03:54:02
4	Hans Rusten	0.02 s	Python 2	2015-10-26 13:29:30
5	Paweł Kordowski	0.02 s	Python 2	2015-11-28 15:25:20
6	Frederik Højholt	0.02 s	Python 2	2015-12-15 16:55:26
7	Samuel Boules	0.02 s	Python 2	2015-12-17 06:36:49
8	Oskar Haarklou Veileborg	0.02 s	Python 2	2015-12-19 20:18:55
9	Urban Pettersson	0.02 s	Python 2	2016-02-03 17:42:18
10	Alexander Teno	0.02 s	Python 2	2016-02-24 17:07:18

#	User	Runtime	Language	Date
1	Hidden user	0.02 s	Python 3	2014-11-26 12:36:32
2	Saša Levstik	0.02 s	Python 3	2015-05-18 13:02:31
3	James Elías Sigurðarson	0.02 s	Python 3	2015-06-02 17:13:10
4	Johannes Agestam	0.02 s	Python 3	2015-06-16 12:39:00
5	Martin Stensgård	0.02 s	Python 3	2015-07-25 05:09:36
6	Baldur Tryggvason	0.02 s	Python 3	2015-08-06 21:58:32
7	Ziga Staresinic	0.02 s	Python 3	2015-09-09 15:59:21
8	Wayne	0.02 s	Python 3	2016-01-24 18:37:47
9	Joshua Martin Tjahjadi	0.02 s	Python 3	2016-02-04 18:20:59
10	Gregor Vavdi	0.02 s	Python 3	2016-02-11 18:18:22

#	User	Runtime	Language	Date
1	Casper Christensen	0.03 s	Ruby	2016-02-27 13:44:31
2	Kellen Watt	0.03 s	Ruby	2016-06-04 04:57:36
3	Erik Rydbert	0.03 s	Ruby	2016-07-08 08:13:54
4	Leonardo Brito	0.03 s	Ruby	2017-01-02 18:21:53
5	Paul Vinell	0.04 s	Ruby	2018-05-07 10:34:28
6	Hidden user	0.04 s	Ruby	2019-02-22 20:11:21
7	Davi Guimarães Leite	0.04 s	Ruby	2019-02-22 20:11:42
8	Thomas Feld	0.06 s	Ruby	2023-01-30 14:53:17
9	Russell Ng	0.07 s	Ruby	2025-05-27 19:06:07

#	User	Length	Language	Date
1	Danny Robinson	68	Bash	2023-09-04 18:04:19

#	User	Length	Language	Date
1	Martin Blom	148	C	2024-01-26 14:16:15
2	Wesley Stephanak	222	C	2019-02-06 01:45:15
3	Magnus Wass	248	C	2020-02-15 14:41:58
4	Ehsan Shoja	257	C	2018-06-25 07:00:15
5	Oscar Melin	272	C	2019-11-22 15:20:11
6	Emil Wihlander	294	C	2020-12-05 07:23:09
7	Hidden user	303	C	2024-09-30 08:31:51
8	Hidden user	305	C	2019-02-22 20:20:09
9	Yap Yi Juinn Jacelyn	307	C	2016-12-16 13:43:16
10	Johan Öhlin	313	C	2017-08-08 15:48:30

#	User	Length	Language	Date
1	Marek Bina	413	C#	2019-02-15 00:02:02
2	李陆屿	472	C#	2018-12-26 11:57:16
3	Kunwei Zhang	512	C#	2018-02-06 03:43:52
4	Pontus Eriksson	534	C#	2017-08-02 09:46:20
5	Gustav Kalander	546	C#	2018-08-23 18:44:05
6	Shaun Lazaro	565	C#	2017-03-06 07:33:20
7	Alireza Nasrollahzadeh	613	C#	2018-06-22 19:00:02
8	Göran Andersson	628	C#	2022-05-09 19:41:47
9	Klas af Geijerstam	644	C#	2017-08-02 12:39:01
10	Steve Jia	683	C#	2018-09-06 17:31:35

#	User	Length	Language	Date
1	Antonio Molina Lovett	215	C++	2016-08-05 12:29:09
2	Herman Karlsson	223	C++	2015-04-09 11:37:12
3	Hidden user	231	C++	2022-11-29 01:02:17
4	Subramanian Ramasamy	237	C++	2022-09-02 01:07:10
5	Alexander Skidanov	254	C++	2024-11-12 15:47:12
6	Li Yao'an	255	C++	2016-08-30 08:49:48
7	Aung Linn	255	C++	2021-03-06 08:45:59
8	隨緣	260	C++	2021-06-09 13:55:02
9	Abhinav Rathi	261	C++	2016-10-16 18:56:58
10	Hidden user	261	C++	2020-02-26 21:10:49

#	User	Length	Language	Date
1	David Cawthon	531	Common Lisp	2020-09-13 07:35:37

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	966	F#	2022-07-10 18:05:19

#	User	Length	Language	Date
1	Jimmy Nejtron	363	Go	2024-12-27 11:00:23
2	Sergey Jakobsen	456	Go	2022-01-02 21:03:13
3	Krzysztof Gibuła	521	Go	2019-02-15 23:41:55
4	Husain Satan	554	Go	2023-12-27 09:14:52
5	Hidden user	630	Go	2016-05-27 15:56:42
6	Adam Smith	813	Go	2017-03-14 00:57:12
7	Ian Howell	950	Go	2016-05-23 04:51:43
8	Norbert Voelker	1098	Go	2021-04-20 01:04:27
9	Hidden user	1226	Go	2019-10-20 18:12:15

#	User	Length	Language	Date
1	Sebastian Banert	327	Haskell	2023-10-05 20:48:34
2	Glenn Norheim	373	Haskell	2017-10-25 19:27:02
3	Håkon Flatval	397	Haskell	2018-08-10 18:52:28
4	Birk Tjelmeland	399	Haskell	2017-10-25 18:30:44
5	Steinar Simonnes	403	Haskell	2024-02-09 15:30:14
6	Lars Tveito	436	Haskell	2015-09-17 20:59:48
7	Brandon Tang	462	Haskell	2023-05-19 21:49:07
8	Morten Clausen	469	Haskell	2019-01-28 22:21:06
9	Brent Yorgey	521	Haskell	2017-10-08 01:59:10
10	David Zacek	524	Haskell	2021-05-11 15:42:00

#	User	Length	Language	Date
1	Carter Henderson	360	Java	2022-01-24 18:15:42
2	Doug Goodman	395	Java	2018-06-11 19:05:22
3	Hidden user	414	Java	2019-01-28 10:27:43
4	Amon Al-khatib	418	Java	2015-12-19 20:58:08
5	Kristina Fountain	418	Java	2020-02-24 04:15:57
6	Mitch Price	419	Java	2016-09-25 21:45:17
7	Austin Duncan	423	Java	2022-03-31 20:28:32
8	Keegan Cuff	428	Java	2020-01-09 00:14:02
9	Егор Порядин	429	Java	2016-06-04 04:42:17
10	Vitou Phy	435	Java	2015-12-18 19:18:23

#	User	Length	Language	Date
1	Chris Wong	705	JavaScript (Node.js)	2021-02-15 16:25:58
2	Hidden user	867	JavaScript (Node.js)	2023-08-23 02:36:03
3	Sander Hellesø	886	JavaScript (Node.js)	2019-04-29 01:59:58
4	John	1046	JavaScript (Node.js)	2021-03-10 04:52:14
5	Andoko Chandra	1113	JavaScript (Node.js)	2020-10-08 21:41:19
6	Niamh Limerick	1129	JavaScript (Node.js)	2022-04-12 15:58:25
7	Carl Sundvall	1413	JavaScript (Node.js)	2018-11-12 13:16:42
8	john zwarts	1441	JavaScript (Node.js)	2020-04-15 14:14:26

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	98	JavaScript (SpiderMonkey)	2022-11-13 00:59:26
2	Jimmy Gustafsson	116	JavaScript (SpiderMonkey)	2024-06-17 23:45:56
3	Evan Magill	188	JavaScript (SpiderMonkey)	2024-04-22 03:33:04
4	Bernard Perrin	238	JavaScript (SpiderMonkey)	2019-02-01 13:08:20
5	Tor Nordqvist	258	JavaScript (SpiderMonkey)	2016-11-05 22:30:18
6	Peter Menyes	307	JavaScript (SpiderMonkey)	2017-08-11 13:28:56
7	Peter Kedemo	309	JavaScript (SpiderMonkey)	2015-12-21 01:40:59
8	Casey Smith	329	JavaScript (SpiderMonkey)	2019-05-29 17:18:26
9	Bjørn Chr. Soltvedt	357	JavaScript (SpiderMonkey)	2016-01-28 17:24:31
10	Wesley Jacobs	380	JavaScript (SpiderMonkey)	2020-03-06 20:23:57

#	User	Length	Language	Date
1	Danny Robinson	130	Julia	2023-09-04 17:59:33
2	Timothy Gaede	847	Julia	2024-04-03 07:01:08

#	User	Length	Language	Date
1	axl	359	Kotlin	2019-08-05 14:47:29
2	Dmitry Shostak	371	Kotlin	2019-08-30 08:08:54
3	Adam Rankin	419	Kotlin	2023-08-26 00:10:24
4	Troy Warmboe	445	Kotlin	2020-02-09 15:39:04
5	Dayan Ruben Gonzalez	457	Kotlin	2020-09-28 02:42:38
6	Ahmed Waseem Saeed	473	Kotlin	2022-05-22 22:38:09
7	Neil Harmon	622	Kotlin	2019-04-03 14:34:17

#	User	Length	Language	Date
1	Hidden user	814	Odin	2025-05-08 22:07:19

#	User	Length	Language	Date
1	David Connolly	505	Pascal	2022-04-12 11:44:47
2	Ingemar Ragnemalm	646	Pascal	2018-03-02 20:07:04
3	Hoang Duong	662	Pascal	2018-03-29 19:22:14

#	User	Length	Language	Date
1	Steven D. Wilson	350	PHP	2016-03-27 07:51:37
2	Renate	391	PHP	2021-07-05 02:33:07
3	Petr Trofimov	501	PHP	2021-04-25 10:57:16
4	Andre Wahyudi	789	PHP	2022-10-20 05:29:47
5	Hidden user	876	PHP	2019-03-27 16:19:34
6	Silvena Lam	1169	PHP	2016-02-11 04:54:36

#	User	Length	Language	Date
1	Hakan Kjellerstrand	355	Prolog	2023-02-24 08:30:39
2	Andriy Zyevakov	604	Prolog	2016-11-28 15:39:35
3	Hadi Qovaizi	11823	Prolog	2016-04-22 23:51:44

#	User	Length	Language	Date
1	Thomas Feld	142	Python 2	2019-08-20 12:05:32
2	Andreas Björklund	179	Python 2	2021-03-25 17:55:34
3	Jeff Robertson	182	Python 2	2017-10-08 05:02:00
4	Johan Lyts	189	Python 2	2019-06-11 22:12:33
5	Hasan Ramezani	204	Python 2	2016-06-27 16:30:01
6	Jesper Öqvist	206	Python 2	2018-10-19 22:00:09
7	Muzakhir Amanzholov	207	Python 2	2017-02-03 00:50:46
8	Neal Zane	213	Python 2	2016-02-07 00:08:24
9	Paweł Kordowski	215	Python 2	2015-11-28 15:25:20
10	Lars Åström	215	Python 2	2019-10-10 10:58:14

#	User	Length	Language	Date
1	Kevin Gomez	94	Python 3	2024-11-15 19:52:41
2	Henrik Olsen Eide	111	Python 3	2023-09-14 21:06:15
3	Adam Levav	115	Python 3	2023-01-24 23:20:50
4	Charles Ancheta	129	Python 3	2023-03-25 23:06:09
5	Ahmed Chamseddine	131	Python 3	2024-07-08 18:14:45
6	David Worley	138	Python 3	2025-11-07 17:56:17
7	Kelly Dance	160	Python 3	2024-07-21 20:18:10
8	Yong Mao	161	Python 3	2022-08-26 01:35:41
9	Anouar Fadili	163	Python 3	2020-03-16 20:13:43
10	Karen Birgitta Hanssen	163	Python 3	2023-07-21 23:02:31

#	User	Length	Language	Date
1	Thomas Feld	64	Ruby	2023-01-30 15:14:15
2	Russell Ng	89	Ruby	2025-05-27 19:06:07
3	Kellen Watt	211	Ruby	2016-06-04 04:57:36
4	Erik Rydbert	221	Ruby	2016-07-08 08:13:54
5	Paul Vinell	276	Ruby	2018-05-07 10:34:28
6	Casper Christensen	277	Ruby	2016-02-27 13:44:31
7	Leonardo Brito	277	Ruby	2017-01-02 18:21:53
8	Hidden user	365	Ruby	2019-02-22 20:11:21
9	Davi Guimarães Leite	365	Ruby	2019-02-22 20:11:42

#	User	Length	Language	Date
1	Vincent Lagerros	561	Rust	2025-02-03 14:19:38
2	Antoine Bauri	624	Rust	2021-03-08 15:34:59
3	Bas Dirks	628	Rust	2022-01-24 08:31:29
4	Hidden user	653	Rust	2025-11-18 22:47:55
5	Shivam Thakur	655	Rust	2019-06-26 12:44:04
6	Emil Dichmann	656	Rust	2025-09-17 09:03:27
7	Chaoyi Yin	679	Rust	2019-04-01 15:38:51
8	Quentin Foulon	691	Rust	2021-03-25 11:03:13
9	Raphaël Gauthier	718	Rust	2020-03-13 15:15:39
10	LouisBordes	760	Rust	2021-03-25 21:29:40

Solution running time distribution