Problem A
Island Hopping — Problem Statistics

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Submissions	6964
Accepted submissions	2857
Submission ratio	41.03%
Authors	1995
Full solves [?]	1778
Full solve Ratio	89.12%

#	User	Runtime	Language	Date
1	João Victor Oliveira Paliares	0.03 s	C	2024-06-10 23:41:02
2	Markus Larsson	0.35 s	C	2022-12-24 22:13:00
3	Wouter van Veelen	0.42 s	C	2015-11-16 02:28:21
4	Charlie Jeansson	0.53 s	C	2022-08-25 22:15:56
5	Dimitris Anastasiadis	0.54 s	C	2022-09-27 11:48:31
6	Jón Steinn Elíasson	0.56 s	C	2017-06-29 16:14:24
7	Abd Ali	0.56 s	C	2018-04-24 01:32:59
8	Eyleifur Bjarkason	0.61 s	C	2019-12-12 04:32:07
9	Mehmet Salih Kemaloğlu	0.62 s	C	2022-03-25 04:02:45
10	Banana Life	0.62 s	C	2022-06-09 11:05:04

#	User	Runtime	Language	Date
1	Yara Omar	0.14 s	C#	2023-03-07 15:32:52
2	Hidden user	0.22 s	C#	2026-03-03 14:38:25
3	Hidden user	0.32 s	C#	2024-03-14 13:33:25
4	Emil Siwerstam Vik	0.45 s	C#	2023-04-25 21:09:48
5	Wiken	0.46 s	C#	2023-04-25 15:56:30
6	Hidden user	0.50 s	C#	2023-04-14 19:23:42
7	Richard Johansson	0.54 s	C#	2023-01-16 16:11:06
8	Artemy Gavrilov	0.75 s	C#	2024-04-03 07:19:12
9	Judit Horvath	0.77 s	C#	2025-03-11 20:28:32
10	Hidden user	0.85 s	C#	2022-08-04 09:27:38

#	User	Runtime	Language	Date
1	Simon Lindholm	0.02 s	C++	2015-10-07 15:40:30
2	Martin Byhlin	0.02 s	C++	2017-02-22 18:50:20
3	Magnus Hokland Hegdahl	0.02 s	C++	2022-02-12 04:23:36
4	Zhang Jikun	0.02 s	C++	2022-07-27 01:01:25
5	Leif Eriksson	0.02 s	C++	2024-02-22 14:31:43
6	Tomas Lagland	0.03 s	C++	2015-10-12 23:30:56
7	Yuanchen Li	0.03 s	C++	2017-09-26 08:12:27
8	Robert Kumpulainen	0.03 s	C++	2017-10-16 14:33:58
9	Gøran Solheim Humlestøl	0.03 s	C++	2018-03-07 09:48:22
10	Domenico Salvagnin	0.03 s	C++	2019-05-20 11:48:34

#	User	Runtime	Language	Date
1	Hidden user	2.72 s	Common Lisp	2019-08-02 07:25:18

#	User	Runtime	Language	Date
1	Hidden user	0.61 s	F#	2025-04-25 09:48:21
2	Elias Illeris Poggi	1.21 s	F#	2025-04-19 14:14:17

#	User	Runtime	Language	Date
1	Michael Laszlo	0.20 s	Go	2016-10-20 22:22:31
2	Norbert Voelker	0.28 s	Go	2021-09-11 01:19:18
3	Vilhelm Melkstam	0.29 s	Go	2022-03-02 08:51:11
4	Yitian Wang	1.30 s	Go	2023-03-23 06:34:36

#	User	Runtime	Language	Date
1	Åsmund Hammer	1.36 s	Haskell	2018-03-08 16:35:03

#	User	Runtime	Language	Date
1	Isaac Tay Zhi Xian	0.24 s	Java	2022-07-28 07:33:46
2	Sebastian Holt Svendsen	0.25 s	Java	2025-04-13 19:05:20
3	William Fiset	0.28 s	Java	2016-05-26 23:29:13
4	Micah Stairs	0.29 s	Java	2016-02-20 17:58:16
5	Peter Beattie	0.29 s	Java	2017-12-17 23:58:11
6	Joel Hägvall	0.29 s	Java	2024-03-21 16:53:44
7	Sven Rönnbäck	0.31 s	Java	2023-05-19 12:27:50
8	Hamza Hayd	0.32 s	Java	2022-03-23 20:30:03
9	Silas Wolff	0.34 s	Java	2025-05-04 01:53:22
10	Hidden user	0.35 s	Java	2025-05-04 15:27:19

#	User	Runtime	Language	Date
1	Gurpartap Singh Bhatti	0.11 s	JavaScript (Node.js)	2019-03-22 23:36:36
2	Banana Life	0.17 s	JavaScript (Node.js)	2022-06-09 14:18:51
3	Nicole Wijkman	2.38 s	JavaScript (Node.js)	2023-03-13 14:52:49
4	Emma Eriksson	2.49 s	JavaScript (Node.js)	2024-03-20 12:00:44
5	Matilda Wasing	2.93 s	JavaScript (Node.js)	2024-10-28 20:51:02

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.70 s	JavaScript (SpiderMonkey)	2020-08-26 20:54:44
2	Christian Pilegaard Cederquist	1.88 s	JavaScript (SpiderMonkey)	2023-04-10 15:48:47
3	Zach Tschetter	2.26 s	JavaScript (SpiderMonkey)	2023-04-16 23:28:20

#	User	Runtime	Language	Date
1	Adam Rankin	0.56 s	Kotlin	2023-05-08 20:44:26
2	Hidden user	1.84 s	Kotlin	2020-01-16 13:01:56
3	Hidden user	1.86 s	Kotlin	2018-03-18 20:52:13
4	Adam Koprowski	2.28 s	Kotlin	2021-03-04 21:56:29
5	Silas Lenz	2.36 s	Kotlin	2019-02-28 15:39:23
6	Phường Lên	2.42 s	Kotlin	2020-01-12 02:39:34

#	User	Runtime	Language	Date
1	Peter Hairatidis	0.35 s	Lua	2025-10-07 23:14:07

#	User	Runtime	Language	Date
1	Oli Gustafsson	0.71 s	PHP	2022-06-08 17:30:58

#	User	Runtime	Language	Date
1	Gurpartap Singh Bhatti	0.12 s	Python 2	2019-03-23 20:00:25
2	Nathaniel Brown	0.35 s	Python 2	2020-10-05 22:17:32
3	Torstein Strømme	0.40 s	Python 2	2018-10-14 14:57:20
4	Yifei Liang	0.45 s	Python 2	2021-04-16 23:45:31
5	Michael Laszlo	0.46 s	Python 2	2016-10-20 21:51:14
6	Marcus Johansson	0.48 s	Python 2	2018-02-17 19:50:03
7	Andreas Björklund	0.91 s	Python 2	2019-10-10 16:19:30
8	Øyvind Haarberg	0.95 s	Python 2	2018-02-05 20:24:06
9	Lars Åström	2.15 s	Python 2	2019-05-20 18:14:32
10	mike	2.46 s	Python 2	2019-08-27 21:04:33

#	User	Runtime	Language	Date
1	Erki Baumann	0.17 s	Python 3	2025-05-12 16:17:11
2	Rahat Alam	0.18 s	Python 3	2025-05-04 22:55:09
3	Tobias Sch	0.18 s	Python 3	2026-03-02 20:44:46
4	ro011110ot	0.19 s	Python 3	2025-09-06 10:02:48
5	Noah Hessen Bjerke	0.19 s	Python 3	2025-11-08 20:10:53
6	Eirik Bergesen	0.21 s	Python 3	2022-03-07 19:49:36
7	Louis Pl	0.21 s	Python 3	2025-03-24 12:54:10
8	Kadin Matotek	0.21 s	Python 3	2025-06-14 12:35:19
9	Fabian Mujdrica	0.21 s	Python 3	2026-03-06 23:41:11
10	Erlend H Dahl	0.22 s	Python 3	2022-03-03 21:21:48

#	User	Runtime	Language	Date
1	Trần Thiên Trí	1.34 s	Ruby	2026-02-03 18:34:22
2	Thomas Feld	1.53 s	Ruby	2025-11-05 13:22:46

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.01 s	Rust	2025-01-19 01:39:15
2	Trần Thiên Trí	0.01 s	Rust	2026-02-03 17:18:29
3	Abdulsalam Al-Gaaod	0.03 s	Rust	2026-02-14 10:00:46
4	Miguel Buzato	0.05 s	Rust	2024-06-07 22:39:33
5	Gustav Sörnäs	0.07 s	Rust	2025-03-05 16:55:29
6	Ryan O'Hara	0.09 s	Rust	2021-11-18 04:32:26
7	Joe Blower	0.09 s	Rust	2025-12-30 02:58:51
8	Bas Dirks	0.25 s	Rust	2024-02-19 08:06:49
9	Anthony Helsel	0.33 s	Rust	2023-07-01 06:15:30
10	HuaiYuan Jing	0.38 s	Rust	2025-09-16 22:26:19

#	User	Runtime	Language	Date
1	Miguel Roldán Muñoz	0.53 s	Zig	2024-06-15 13:09:17

#	User	Length	Language	Date
1	Jesper Öqvist	1802	C	2018-09-12 13:56:13
2	Ng Wei Jie	1818	C	2020-02-18 07:58:58
3	Mehmet Salih Kemaloğlu	1818	C	2022-03-25 04:02:45
4	Farhad Cader	1818	C	2024-06-11 07:31:26
5	Jón Steinn Elíasson	1903	C	2017-06-29 16:14:24
6	Abd Ali	1903	C	2018-04-24 01:32:59
7	King Vashi IV	1903	C	2020-12-03 19:39:25
8	Mikey Lau	1903	C	2021-10-10 17:13:47
9	Hamza Hayd	1903	C	2022-03-23 19:09:47
10	aishu ramachandrula	1903	C	2022-04-04 18:09:13

#	User	Length	Language	Date
1	Hidden user	1768	C#	2026-03-03 14:38:25
2	Yara Omar	1898	C#	2023-03-07 15:32:52
3	Rossarin Upara	2088	C#	2023-03-27 00:38:17
4	aishu ramachandrula	2132	C#	2022-04-10 19:05:52
5	Petrus Aktan	2327	C#	2023-11-26 19:49:52
6	David Johansson	2353	C#	2023-02-12 10:51:36
7	Hidden user	2872	C#	2023-04-14 19:23:42
8	Wiken	2906	C#	2023-04-25 15:56:30
9	Diyar Demircioglu	3177	C#	2023-12-05 13:24:28
10	Artemy Gavrilov	3182	C#	2024-04-03 07:19:12

#	User	Length	Language	Date
1	Tuukka Korhonen	838	C++	2022-02-10 23:28:46
2	Sidhant Bansal	859	C++	2018-05-10 23:58:35
3	Presley Graham	876	C++	2021-04-21 21:42:37
4	Johan Wind	887	C++	2018-04-20 00:44:28
5	Alex Dai	898	C++	2016-08-21 01:41:49
6	Fredrik Präntare	913	C++	2018-02-23 05:23:40
7	Simon Lindholm	914	C++	2015-10-07 15:40:30
8	Way Tan	923	C++	2020-09-30 12:05:54
9	Li Yao'an	926	C++	2017-02-10 07:43:52
10	Ragur Krishnan	931	C++	2018-07-09 21:10:15

#	User	Length	Language	Date
1	Hidden user	1743	Common Lisp	2019-08-02 07:20:12

#	User	Length	Language	Date
1	Hidden user	1485	F#	2025-04-25 09:48:21
2	Elias Illeris Poggi	3813	F#	2025-04-19 13:12:10

#	User	Length	Language	Date
1	Vilhelm Melkstam	2273	Go	2022-03-02 08:51:11
2	Yitian Wang	2299	Go	2023-03-23 06:34:36
3	Michael Laszlo	2575	Go	2016-10-20 20:43:35
4	Norbert Voelker	4042	Go	2021-09-11 01:19:18

#	User	Length	Language	Date
1	Åsmund Hammer	3352	Haskell	2018-03-08 16:35:03

#	User	Length	Language	Date
1	Ong Wei Hong	1156	Java	2022-07-28 10:09:24
2	Doug Goodman	1208	Java	2018-01-12 17:09:14
3	Yeung Man Tsung	1340	Java	2022-07-27 09:51:45
4	Joshua Coward	1387	Java	2020-10-07 07:19:25
5	Liu Han	1529	Java	2020-04-12 19:19:10
6	Erlend Raa Vågset	1560	Java	2018-03-07 11:09:38
7	Stela Palii	1585	Java	2018-01-11 09:42:59
8	Peter Kvist	1630	Java	2025-05-05 09:43:00
9	Isaac Lee	1640	Java	2024-09-26 00:55:12
10	long do	1641	Java	2021-01-30 01:36:48

#	User	Length	Language	Date
1	Gurpartap Singh Bhatti	1504	JavaScript (Node.js)	2019-03-22 23:36:36
2	Banana Life	1567	JavaScript (Node.js)	2022-06-09 14:18:51
3	Nicole Wijkman	2125	JavaScript (Node.js)	2023-03-13 14:52:49
4	Matilda Wasing	2258	JavaScript (Node.js)	2024-10-28 20:51:02
5	Emma Eriksson	2640	JavaScript (Node.js)	2024-03-20 12:00:44

#	User	Length	Language	Date
1	Zach Tschetter	1399	JavaScript (SpiderMonkey)	2023-04-16 23:28:20
2	Christian Pilegaard Cederquist	3253	JavaScript (SpiderMonkey)	2023-04-10 15:48:47
3	Bjørn Chr. Soltvedt	19361	JavaScript (SpiderMonkey)	2020-08-26 20:54:44

#	User	Length	Language	Date
1	Adam Rankin	1840	Kotlin	2023-05-08 20:44:26
2	Phường Lên	1867	Kotlin	2020-01-12 02:39:34
3	Adam Koprowski	2670	Kotlin	2021-03-04 21:56:29
4	Hidden user	2819	Kotlin	2020-01-16 13:01:56
5	Silas Lenz	3180	Kotlin	2019-02-28 15:39:23
6	Hidden user	4827	Kotlin	2018-03-02 18:19:19

#	User	Length	Language	Date
1	Peter Hairatidis	1399	Lua	2025-10-07 23:14:07

#	User	Length	Language	Date
1	Oli Gustafsson	2052	PHP	2022-06-08 17:30:58

#	User	Length	Language	Date
1	Andreas Björklund	646	Python 2	2019-10-10 16:19:30
2	Gurpartap Singh Bhatti	870	Python 2	2019-03-23 20:17:41
3	Torstein Strømme	885	Python 2	2018-10-14 14:57:20
4	Marcus Johansson	988	Python 2	2018-02-17 19:50:03
5	Lars Åström	1174	Python 2	2019-05-20 18:14:32
6	Øyvind Haarberg	1661	Python 2	2018-02-05 20:24:06
7	mike	1764	Python 2	2019-08-27 21:04:33
8	Nathaniel Brown	2480	Python 2	2020-10-05 22:17:32
9	Michael Laszlo	2575	Python 2	2016-10-20 21:51:14
10	Yifei Liang	3224	Python 2	2021-04-16 23:45:31

#	User	Length	Language	Date
1	Anton Nilsson	257	Python 3	2025-03-03 18:23:59
2	Trần Thiên Trí	275	Python 3	2026-02-03 17:24:07
3	Gustav Elmqvist	292	Python 3	2023-02-27 19:32:36
4	Bo Stokes	292	Python 3	2024-10-29 17:37:39
5	Jorke de Vlas	332	Python 3	2024-02-29 20:02:48
6	Nino Bašić	401	Python 3	2023-01-10 18:16:55
7	Elijah Satrom	470	Python 3	2022-11-29 17:50:32
8	Lex Janssens	470	Python 3	2025-11-06 21:57:08
9	Noah Hessen Bjerke	558	Python 3	2025-11-08 20:10:53
10	Josefin Fundin	560	Python 3	2020-04-25 16:45:50

#	User	Length	Language	Date
1	Thomas Feld	173	Ruby	2025-11-05 13:33:38
2	Trần Thiên Trí	219	Ruby	2026-02-03 18:34:22

#	User	Length	Language	Date
1	David Rasch	1788	Rust	2021-05-25 13:01:07
2	Miguel Buzato	1837	Rust	2024-06-07 22:39:33
3	Hidden user	1959	Rust	2022-02-16 15:29:09
4	Gustav Sörnäs	2231	Rust	2025-03-05 12:09:06
5	Greg Vance	2308	Rust	2023-04-18 21:33:35
6	Trần Thiên Trí	2379	Rust	2026-02-03 17:12:27
7	HuaiYuan Jing	2512	Rust	2025-09-16 22:26:19
8	Ryan O'Hara	2757	Rust	2021-11-18 04:32:26
9	Anthony Helsel	2783	Rust	2023-07-01 06:15:30
10	Jonathan Choi	2797	Rust	2024-04-01 14:14:24

#	User	Length	Language	Date
1	Miguel Roldán Muñoz	3858	Zig	2024-06-15 13:09:17

Solution running time distribution