Problem A
Oktalni — Problem Statistics

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Submissions	3320
Accepted submissions	1723
Submission ratio	51.90%
Authors	1654
Full solves [?]	1546
Full solve Ratio	93.47%

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.06 s	Bash	2023-09-08 15:24:28
2	Thomas Feld	0.06 s	Bash	2023-09-27 09:14:58

#	User	Runtime	Language	Date
1	Faisal Rahman	0.01 s	C#	2017-11-08 18:13:06
2	Ludwig Hedeby	0.01 s	C#	2018-01-22 16:26:24
3	Khin Nyunt	0.02 s	C#	2017-03-26 16:34:47
4	Klas af Geijerstam	0.02 s	C#	2017-04-10 14:58:13
5	Firas Al Omary	0.02 s	C#	2017-04-11 07:38:45
6	Duelene Olson	0.02 s	C#	2017-05-24 04:01:25
7	Ron Harper	0.02 s	C#	2018-03-08 19:22:35
8	Дмитро Рудий	0.02 s	C#	2018-07-04 15:15:46
9	Marek Bina	0.02 s	C#	2019-02-16 18:49:40
10	Thomas Norris	0.02 s	C#	2019-10-17 20:49:01

#	User	Runtime	Language	Date
1	Timothy Bilik	0.01 s	Common Lisp	2022-09-24 18:20:00

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.02 s	F#	2022-10-22 14:01:30

#	User	Runtime	Language	Date
1	Thomas	0.00 s	Go	2024-01-10 20:20:18
2	King Lawrence L. Caubalejo	0.00 s	Go	2025-09-02 15:50:12
3	James Robb	0.02 s	Go	2020-04-29 00:56:14
4	Hidden user	0.02 s	Go	2022-12-03 21:04:22
5	James Robb	0.08 s	Go	2020-05-12 12:18:38
6	Norbert Voelker	0.08 s	Go	2021-04-29 17:32:12
7	dick move	0.08 s	Go	2021-05-12 18:19:38

#	User	Runtime	Language	Date
1	Taras Romanyuk	0.04 s	Java	2024-08-04 21:39:29
2	Guangyi Zhou	0.04 s	Java	2024-12-29 05:32:31
3	Rene Argento	0.04 s	Java	2025-01-28 19:36:42
4	Mark Meysenburg	0.04 s	Java	2025-04-11 16:18:38
5	Björn Löfroth	0.05 s	Java	2010-11-10 17:47:19
6	Winston Cheung	0.05 s	Java	2017-03-09 23:10:35
7	Martijn Muijsers	0.05 s	Java	2017-03-11 15:52:28
8	Kell Skogh	0.05 s	Java	2017-03-11 18:30:17
9	Nick Wu	0.05 s	Java	2017-03-12 02:21:25
10	Erling Lindholm	0.05 s	Java	2017-03-12 10:28:18

#	User	Runtime	Language	Date
1	Sander Hellesø	0.05 s	JavaScript (Node.js)	2019-05-03 08:02:50
2	Gurpartap Singh Bhatti	0.05 s	JavaScript (Node.js)	2019-06-08 23:45:27
3	Samuel Högfeldt	0.08 s	JavaScript (Node.js)	2022-08-05 13:13:27
4	Andoko Chandra	0.42 s	JavaScript (Node.js)	2020-10-18 20:10:50
5	Khin Nyunt	0.42 s	JavaScript (Node.js)	2021-11-27 15:12:53
6	Chris Wong	0.42 s	JavaScript (Node.js)	2022-01-14 16:49:26

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2017-03-09 20:18:55
2	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2017-03-18 20:51:04
3	Paul Leung	0.01 s	JavaScript (SpiderMonkey)	2017-05-25 18:27:04
4	Aletta Géczi	0.01 s	JavaScript (SpiderMonkey)	2017-09-03 18:37:43
5	Axel Yung	0.01 s	JavaScript (SpiderMonkey)	2018-02-21 21:28:15
6	Andri Andresson	0.01 s	JavaScript (SpiderMonkey)	2018-04-24 18:07:41
7	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2024-07-18 21:50:33
8	Peter Menyes	0.03 s	JavaScript (SpiderMonkey)	2021-09-14 22:33:40

#	User	Runtime	Language	Date
1	Timothy Gaede	0.47 s	Julia	2024-04-06 08:57:34
2	Danny Robinson	0.52 s	Julia	2023-07-01 05:09:38

#	User	Runtime	Language	Date
1	Adam Rankin	0.16 s	Kotlin	2023-05-01 23:25:19
2	Zaw Myat	0.18 s	Kotlin	2024-02-01 13:29:32
3	Neil Harmon	0.19 s	Kotlin	2019-05-14 15:59:08
4	Adam Koprowski	0.19 s	Kotlin	2021-07-05 13:01:43
5	Jacob Huebner	0.19 s	Kotlin	2022-03-03 06:05:00
6	Emil Wihlander	0.19 s	Kotlin	2024-07-23 23:44:21
7	Phường Lên	0.20 s	Kotlin	2020-01-06 01:04:35
8	Einar Kjellback	0.22 s	Kotlin	2019-12-17 18:12:03
9	Troy Warmboe	0.22 s	Kotlin	2020-02-13 23:08:00
10	Chris Johnson	0.23 s	Kotlin	2025-01-29 22:39:08

#	User	Runtime	Language	Date
1	Matthew Farshad	0.00 s	Lua	2025-02-19 21:34:30

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2018-08-15 21:02:51

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.01 s	Prolog	2018-11-21 18:24:10
2	Hakan Kjellerstrand	0.02 s	Prolog	2023-02-17 11:06:04

#	User	Runtime	Language	Date
1	Christofer Ohlsson	0.02 s	Python 2	2017-03-10 08:30:12
2	Muzakhir Amanzholov	0.02 s	Python 2	2017-03-31 20:28:20
3	Cole Bite	0.02 s	Python 2	2017-04-25 02:32:04
4	Maksym Bendeberia	0.02 s	Python 2	2017-06-07 00:12:58
5	Ivan Carvalho	0.02 s	Python 2	2017-07-18 02:40:27
6	Kristmundur Agust	0.02 s	Python 2	2017-08-17 00:43:48
7	Çağdaş Öztekin	0.02 s	Python 2	2017-09-19 02:33:04
8	Justin Su	0.02 s	Python 2	2017-09-19 09:19:24
9	Tal Melamed	0.02 s	Python 2	2017-11-03 02:31:46
10	Martin Wan	0.02 s	Python 2	2017-11-03 22:51:46

#	User	Runtime	Language	Date
1	Bernhard Kartefla	0.02 s	Python 3	2017-03-09 17:22:11
2	Óðinn Eyjólfsson	0.02 s	Python 3	2017-03-09 17:25:12
3	Wayne	0.02 s	Python 3	2017-03-10 12:36:38
4	Mohammed Jasam	0.02 s	Python 3	2017-03-20 20:33:23
5	Ciara Godwin	0.02 s	Python 3	2017-03-20 22:54:47
6	Minato Sky Myers	0.02 s	Python 3	2017-03-21 19:34:06
7	Andrew Juwon Park	0.02 s	Python 3	2017-03-22 06:20:13
8	Cian Ruane	0.02 s	Python 3	2017-03-23 21:59:43
9	David Castelblanco Benavides	0.02 s	Python 3	2017-04-25 00:18:49
10	Ram Basnet	0.02 s	Python 3	2017-05-09 04:52:47

#	User	Runtime	Language	Date
1	Hidden user	0.03 s	Ruby	2017-10-11 23:07:57
2	Kok Dith	0.05 s	Ruby	2021-08-20 11:14:44
3	Frederik Spang	0.05 s	Ruby	2022-09-30 19:04:40
4	Frederik Petersen	0.05 s	Ruby	2022-10-04 18:57:17
5	Andreas Severin Hauch Trøstrup	0.06 s	Ruby	2022-10-02 18:11:12
6	Thomas Feld	0.06 s	Ruby	2022-11-28 12:37:09
7	Noah Hessen Bjerke	0.06 s	Ruby	2022-12-08 22:10:14
8	Harry Zhang	0.06 s	Ruby	2023-01-06 14:32:29
9	Christian Pilegaard Cederquist	0.06 s	Ruby	2023-01-13 00:21:22
10	Gustav Elmqvist	0.06 s	Ruby	2023-03-18 03:32:14

#	User	Length	Language	Date
1	Chenzhang Hu	24	Bash	2025-09-13 18:26:08
2	Thomas Feld	28	Bash	2023-09-27 09:14:58

#	User	Length	Language	Date
1	Mouad Naciri	288	C	2017-03-10 21:30:37
2	簡弘哲	424	C	2021-02-02 15:10:05
3	Jonathan Hallström	489	C	2022-05-04 08:20:04
4	Mirel Cosulschi	535	C	2025-04-23 09:38:47
5	Sambit Palit	567	C	2020-09-14 03:21:41
6	Alper Tuzcu	575	C	2022-11-13 15:59:23
7	PhilCampbell	607	C	2021-02-16 12:08:23
8	Eyleifur Bjarkason	612	C	2023-06-30 21:46:28
9	Hidden user	623	C	2025-06-05 05:04:05
10	Álfgrímur Davíð	675	C	2025-03-30 14:50:55

#	User	Length	Language	Date
1	traxex	222	C#	2024-05-08 14:43:35
2	Mark Meysenburg	421	C#	2023-04-28 20:35:01
3	Esty Crow	480	C#	2025-01-31 09:15:05
4	Anthony Ye	499	C#	2025-01-31 21:02:34
5	Marek Bina	542	C#	2019-02-16 18:49:40
6	Գոռ Բաղդասարյան	594	C#	2024-07-09 11:36:29
7	Khin Nyunt	668	C#	2017-03-26 16:34:47
8	Göran Andersson	670	C#	2022-05-16 18:42:30
9	Mikael Fiala-Lundström	791	C#	2021-04-10 01:20:55
10	Adam Grady	822	C#	2021-09-08 20:54:29

#	User	Length	Language	Date
1	Frans Meulenbroeks	214	C++	2024-11-27 17:47:02
2	Tyler Fernando	219	C++	2022-11-01 05:36:19
3	Zane Yu	240	C++	2019-01-17 14:35:40
4	Yeung Man Tsung	241	C++	2022-11-18 11:09:12
5	Róbert Kristian Freysson	256	C++	2025-03-30 15:53:35
6	Bennett Lim	271	C++	2020-03-14 16:07:30
7	Daoudi Asmaa	275	C++	2017-03-11 15:48:07
8	Eimhin McDonald	295	C++	2018-02-07 21:16:07
9	人外沙耶	301	C++	2020-06-06 09:48:14
10	Sidhant Bansal	315	C++	2018-05-10 20:44:51

#	User	Length	Language	Date
1	Timothy Bilik	84	Common Lisp	2022-09-24 18:20:00

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	799	F#	2022-10-22 14:01:30

#	User	Length	Language	Date
1	Thomas	294	Go	2024-01-10 20:20:18
2	James Robb	383	Go	2020-04-29 00:56:14
3	James Robb	383	Go	2020-05-12 12:18:38
4	dick move	533	Go	2021-05-12 18:19:38
5	Hidden user	611	Go	2022-12-03 21:04:22
6	Norbert Voelker	836	Go	2021-04-29 17:32:12
7	King Lawrence L. Caubalejo	1260	Go	2025-09-02 15:50:12

#	User	Length	Language	Date
1	Joeri	182	Haskell	2023-06-22 20:17:06
2	Hidden user	255	Haskell	2019-08-28 17:54:06
3	Sebastian Banert	324	Haskell	2023-10-05 23:38:02
4	Hidden user	327	Haskell	2023-12-02 13:17:40
5	Brent Yorgey	334	Haskell	2017-10-16 05:35:21
6	Aurélien Pepin	407	Haskell	2019-09-30 09:44:28
7	Jan Hrček	422	Haskell	2021-03-12 07:44:29
8	Mason Barnhill	429	Haskell	2023-04-11 19:00:24
9	Olle Eriksson	470	Haskell	2018-06-28 19:59:09
10	Martin Jackson	522	Haskell	2017-04-13 00:51:02

#	User	Length	Language	Date
1	Max Holmberg	191	Java	2018-01-31 13:37:11
2	Paul Boddington	231	Java	2020-07-19 15:31:03
3	Zach Tschetter	240	Java	2023-06-25 22:30:19
4	Anthony Clark	246	Java	2017-04-03 02:22:27
5	Artemis Ngoh	255	Java	2023-06-16 16:26:43
6	Misael Esperanzate	257	Java	2020-02-04 22:47:22
7	Victor Vatn	261	Java	2020-07-27 13:48:39
8	Shen Licong	262	Java	2023-12-28 10:29:09
9	Drake Packard	263	Java	2018-03-06 23:36:38
10	Jens Christian Dalgaard	267	Java	2021-02-26 15:01:38

#	User	Length	Language	Date
1	Khin Nyunt	704	JavaScript (Node.js)	2021-11-27 15:12:53
2	Chris Wong	732	JavaScript (Node.js)	2022-01-14 16:49:26
3	Samuel Högfeldt	790	JavaScript (Node.js)	2022-08-05 13:13:27
4	Sander Hellesø	899	JavaScript (Node.js)	2019-05-03 08:02:50
5	Gurpartap Singh Bhatti	936	JavaScript (Node.js)	2019-06-08 23:45:27
6	Andoko Chandra	1064	JavaScript (Node.js)	2020-10-18 20:10:50

#	User	Length	Language	Date
1	Jimmy Gustafsson	187	JavaScript (SpiderMonkey)	2024-07-18 21:51:41
2	Peter Kedemo	212	JavaScript (SpiderMonkey)	2017-03-18 20:51:04
3	Bjørn Chr. Soltvedt	275	JavaScript (SpiderMonkey)	2017-03-09 20:18:55
4	Axel Yung	426	JavaScript (SpiderMonkey)	2018-02-21 21:28:15
5	Aletta Géczi	489	JavaScript (SpiderMonkey)	2017-09-03 18:37:43
6	Paul Leung	559	JavaScript (SpiderMonkey)	2017-05-25 18:27:04
7	Andri Andresson	602	JavaScript (SpiderMonkey)	2018-04-24 18:07:41
8	Peter Menyes	1603	JavaScript (SpiderMonkey)	2021-09-14 22:33:40

#	User	Length	Language	Date
1	Danny Robinson	55	Julia	2023-07-01 05:09:38
2	Timothy Gaede	438	Julia	2024-04-06 08:57:34

#	User	Length	Language	Date
1	Adam Rankin	88	Kotlin	2023-05-01 23:25:19
2	Phường Lên	93	Kotlin	2020-01-06 01:04:35
3	Emil Wihlander	130	Kotlin	2024-07-23 23:44:21
4	Chris Johnson	154	Kotlin	2025-01-29 22:39:08
5	Jacob Huebner	165	Kotlin	2022-03-03 06:05:00
6	Einar Kjellback	310	Kotlin	2019-12-17 18:12:03
7	Neil Harmon	449	Kotlin	2019-05-14 15:59:08
8	Zaw Myat	594	Kotlin	2024-02-01 13:29:32
9	Troy Warmboe	615	Kotlin	2020-02-13 23:08:00
10	Adam Koprowski	695	Kotlin	2021-07-05 13:01:43

#	User	Length	Language	Date
1	Matthew Farshad	656	Lua	2025-02-19 21:34:30

#	User	Length	Language	Date
1	Ingemar Ragnemalm	630	Pascal	2018-08-15 21:02:51

#	User	Length	Language	Date
1	Hakan Kjellerstrand	407	Prolog	2023-02-17 11:17:36
2	Andriy Zyevakov	757	Prolog	2018-11-21 18:24:10

#	User	Length	Language	Date
1	Dmitry Lyubshin	42	Python 2	2018-03-17 12:38:10
2	Ivan Carvalho	49	Python 2	2017-07-18 02:40:27
3	Thomas Feld	49	Python 2	2019-09-03 16:01:17
4	Sai Sourabh C	53	Python 2	2022-11-23 16:00:11
5	Shakeel Samsudeen	54	Python 2	2020-06-10 22:39:14
6	Kristmundur Agust	61	Python 2	2017-08-17 00:43:48
7	Justin Su	66	Python 2	2017-09-19 09:19:24
8	Martin Wan	84	Python 2	2017-11-03 22:51:46
9	Jesper Öqvist	106	Python 2	2018-10-24 21:46:52
10	Christofer Ohlsson	125	Python 2	2017-03-10 08:30:12

#	User	Length	Language	Date
1	Clement Oh	26	Python 3	2023-05-06 09:46:36
2	Si Jie Tan	26	Python 3	2025-12-12 04:55:49
3	András Biczó	28	Python 3	2022-10-26 13:07:49
4	Emiel Wiedijk	28	Python 3	2022-11-13 14:27:08
5	Eduardo Vicente Petry	28	Python 3	2023-02-07 18:28:38
6	Sverrir Hákon Marteinsson	28	Python 3	2024-03-19 23:24:11
7	Tai Tze Kin	28	Python 3	2024-05-05 11:08:15
8	Isaac Erdman	28	Python 3	2024-08-27 18:04:52
9	Marcel Rød	29	Python 3	2021-04-09 12:01:44
10	Hidden user	29	Python 3	2023-11-13 16:01:53

#	User	Length	Language	Date
1	Thomas Feld	20	Ruby	2022-11-28 12:37:09
2	Frederik Spang	24	Ruby	2022-09-30 19:04:40
3	Andreas Severin Hauch Trøstrup	24	Ruby	2022-10-02 18:11:12
4	Frederik Petersen	24	Ruby	2022-10-04 18:57:17
5	Harry Zhang	24	Ruby	2023-01-06 14:32:29
6	Christian Pilegaard Cederquist	24	Ruby	2023-01-13 00:21:55
7	Gustav Elmqvist	24	Ruby	2023-03-18 03:32:14
8	Clement Oh	24	Ruby	2024-03-15 12:41:31
9	Noah Hessen Bjerke	25	Ruby	2022-12-08 22:10:14
10	Hidden user	26	Ruby	2017-10-11 23:07:57

#	User	Length	Language	Date
1	Vincent Lagerros	163	Rust	2025-01-30 16:24:15
2	Pankajkumar Patro	212	Rust	2024-08-25 18:59:24
3	Bas Dirks	236	Rust	2022-01-05 22:07:02
4	Isak Jägberg	264	Rust	2024-10-19 21:06:48
5	Morten Raeburn	506	Rust	2021-11-17 05:27:56
6	Emil Dichmann	534	Rust	2025-10-19 21:16:56
7	Lien Cai Ting	544	Rust	2022-10-31 07:30:04
8	Dude Bro	658	Rust	2023-09-21 18:46:08
9	Henrik Josefsson	677	Rust	2025-07-17 22:49:37
10	Lukman	741	Rust	2021-08-26 08:36:50

Solution running time distribution