Problem A
Cave Exploration — Problem Statistics

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Submissions	3410
Accepted submissions	1254
Submission ratio	36.77%
Authors	1034
Accepted authors	927
Author ratio	89.65%

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	C	2025-04-29 14:19:05
2	Ivan Petrov	0.02 s	C	2020-02-07 09:56:48

#	User	Runtime	Language	Date
1	James Khalil	0.07 s	C#	2024-04-03 04:23:09
2	Artemy Gavrilov	0.07 s	C#	2024-04-03 07:31:02
3	Nathan Andrews	0.17 s	C#	2024-10-29 20:02:06

#	User	Runtime	Language	Date
1	Geralt of Rivia	0.00 s	C++	2022-06-07 03:07:55
2	Theodor Beskow	0.00 s	C++	2022-09-04 18:48:35
3	William Gan	0.01 s	C++	2018-09-15 04:36:53
4	Jonathan Irvin Gunawan	0.01 s	C++	2018-09-15 04:41:42
5	Ainge Team	0.01 s	C++	2018-09-15 04:54:43
6	Muhammad Ayaz Dzulfikar	0.01 s	C++	2018-09-15 04:56:50
7	Hidden user	0.01 s	C++	2018-09-15 04:57:03
8	Hsin Yi Wang	0.01 s	C++	2018-09-15 05:00:08
9	Huy Le	0.01 s	C++	2018-09-15 05:09:30
10	Vincent Alfred	0.01 s	C++	2018-09-15 05:09:47

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	Common Lisp	2019-08-07 08:50:12

#	User	Runtime	Language	Date
1	Yitian Wang	0.20 s	Go	2023-03-24 01:42:43
2	Norbert Voelker	0.28 s	Go	2022-02-03 23:04:23

#	User	Runtime	Language	Date
1	Khánh Nguyễn Tiến	0.11 s	Java	2018-09-19 07:52:30
2	Bjørn Dons	0.11 s	Java	2018-12-15 19:32:49
3	Nguyễn Hùng Cường	0.12 s	Java	2018-09-18 06:58:44
4	Nguyễn Mạnh Phúc	0.12 s	Java	2018-10-19 04:39:52
5	Đức Phạm Hoài	0.14 s	Java	2018-09-18 06:28:25
6	Ahmad Barhamje	0.19 s	Java	2020-08-19 05:16:55
7	Sabbir Jaman Ruman	0.26 s	Java	2021-08-29 21:32:03
8	Taras Romanyuk	0.26 s	Java	2024-06-09 12:36:47
9	Yuuki Sawanoi	0.28 s	Java	2023-07-16 11:57:12
10	Steven Cheng	0.29 s	Java	2020-06-07 07:47:50

#	User	Runtime	Language	Date
1	Christian Cederquist	0.30 s	JavaScript (SpiderMonkey)	2023-10-30 21:56:03

#	User	Runtime	Language	Date
1	Sam Keyser	0.43 s	Kotlin	2022-10-17 21:14:09
2	Hidden user	0.57 s	Kotlin	2019-11-22 22:53:15
3	Phường Lên	0.62 s	Kotlin	2019-11-24 20:33:56
4	André Dyrstad	0.75 s	Kotlin	2020-08-13 13:06:59

#	User	Runtime	Language	Date
1	Caleb Austin	0.08 s	Lua	2024-11-03 02:02:29

#	User	Runtime	Language	Date
1	Andreas Björklund	0.11 s	Python 2	2020-11-15 15:55:32

#	User	Runtime	Language	Date
1	Chandrahas A	0.08 s	Python 3	2025-06-30 07:45:30
2	Sami Melhem	0.09 s	Python 3	2025-03-24 23:12:27
3	Yi-Min Seah	0.10 s	Python 3	2022-01-14 06:19:08
4	Hidden user	0.10 s	Python 3	2025-02-20 04:10:47
5	Nhự Nương Họ Vũ	0.10 s	Python 3	2025-03-25 23:06:34
6	Eduardo Alvarez Hernandez	0.10 s	Python 3	2025-03-28 00:39:53
7	Ethan	0.10 s	Python 3	2025-06-14 15:08:45
8	Erik Bessö	0.11 s	Python 3	2023-10-18 22:40:36
9	Hien Tuan Huynh	0.11 s	Python 3	2024-05-29 00:31:42
10	Michael Wu	0.11 s	Python 3	2024-06-05 06:53:58

#	User	Runtime	Language	Date
1	Logan Detrick	0.00 s	Rust	2024-05-27 00:27:53
2	Bas Dirks	0.00 s	Rust	2025-03-08 08:13:25
3	Niklas Sandén	0.01 s	Rust	2023-03-08 19:28:52
4	Davíð Helgason	0.02 s	Rust	2020-03-01 18:07:24
5	Eric Pinter	0.05 s	Rust	2020-10-13 01:23:40

#	User	Length	Language	Date
1	Hidden user	1059	C	2023-11-30 22:59:11
2	Ivan Petrov	2477	C	2020-02-07 09:56:48

#	User	Length	Language	Date
1	James Khalil	2495	C#	2024-04-03 04:23:09
2	Nathan Andrews	2751	C#	2024-10-29 20:02:06
3	Artemy Gavrilov	2999	C#	2024-04-03 07:31:02

#	User	Length	Language	Date
1	Michael Wu	364	C++	2024-06-05 07:27:29
2	Hidden user	642	C++	2024-09-09 20:42:12
3	Árni Bjarnsteinsson	706	C++	2020-02-24 19:35:34
4	Montgomery Bohde	782	C++	2024-03-29 05:15:12
5	MD Minhazul Islam	788	C++	2018-09-20 09:49:21
6	Leonardo Blanger	806	C++	2020-12-27 04:29:11
7	Hyunjun Lee	808	C++	2022-11-02 19:20:35
8	Mohsen Dehbashi	809	C++	2020-05-27 09:43:36
9	William Gan	814	C++	2018-09-15 04:36:53
10	Hidden user	826	C++	2025-01-07 20:17:36

#	User	Length	Language	Date
1	Hidden user	2276	Common Lisp	2019-08-07 08:22:15

#	User	Length	Language	Date
1	Yitian Wang	3160	Go	2023-03-24 01:42:43
2	Norbert Voelker	3985	Go	2022-02-03 23:04:23

#	User	Length	Language	Date
1	Doug Goodman	1739	Java	2020-04-11 19:05:31
2	Yuuki Sawanoi	1873	Java	2023-07-16 11:57:12
3	Austin Fernandez	2052	Java	2018-09-17 18:14:42
4	Kevin Dai	2091	Java	2024-03-30 22:32:26
5	Jeffrey Formica	2132	Java	2023-03-31 18:34:54
6	Tylan McKinney	2321	Java	2020-11-12 00:05:54
7	Forrest Stonedahl	2391	Java	2018-10-09 00:25:05
8	Duncan Page	2477	Java	2018-10-23 00:31:45
9	Morten Flensborg Jensen	2490	Java	2019-10-09 22:07:53
10	Graeme Zinck	2493	Java	2019-05-14 20:19:52

#	User	Length	Language	Date
1	Christian Cederquist	3057	JavaScript (SpiderMonkey)	2023-10-30 21:56:03

#	User	Length	Language	Date
1	Phường Lên	1129	Kotlin	2019-11-24 20:33:56
2	Hidden user	1215	Kotlin	2019-11-22 22:53:15
3	André Dyrstad	2448	Kotlin	2020-08-13 13:06:59
4	Sam Keyser	3105	Kotlin	2022-10-17 21:14:09

#	User	Length	Language	Date
1	Caleb Austin	1615	Lua	2024-11-03 02:02:29

#	User	Length	Language	Date
1	Andreas Björklund	573	Python 2	2020-11-15 15:55:32

#	User	Length	Language	Date
1	Michael Wu	294	Python 3	2024-06-05 07:02:09
2	jt	633	Python 3	2025-03-26 21:32:09
3	Thibault Raffaillac	634	Python 3	2021-03-16 14:52:35
4	Keshav Dharshan	666	Python 3	2025-03-28 06:27:22
5	Andrew Fong	773	Python 3	2024-06-05 06:21:25
6	Erik Amirell Eklöf	823	Python 3	2024-02-17 00:47:14
7	Laith Bohsali	825	Python 3	2025-03-24 05:02:28
8	Nicholas Russell Saerang	879	Python 3	2023-11-22 01:27:32
9	Brandon Young	885	Python 3	2023-02-24 01:57:06
10	Jack Vacek	996	Python 3	2025-03-30 00:27:03

#	User	Length	Language	Date
1	Logan Detrick	2835	Rust	2024-05-27 00:27:53
2	Davíð Helgason	3115	Rust	2020-03-01 18:07:24
3	Bas Dirks	3776	Rust	2025-03-07 22:35:00
4	Eric Pinter	4304	Rust	2020-10-13 01:23:40
5	Niklas Sandén	27393	Rust	2023-03-08 19:28:52

Solution running time distribution