Problem A
Cu Chi Tunnels — Problem Statistics

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Submissions	2007
Accepted submissions	737
Submission ratio	36.72%
Authors	689
Full solves [?]	594
Full solve Ratio	86.21%

#	User	Runtime	Language	Date
1	Thomas Feld	0.02 s	APL	2023-06-06 09:51:11

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.07 s	Bash	2024-02-05 13:59:28

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	C	2017-12-10 19:49:22
2	Ehsan Shoja	0.00 s	C	2018-06-12 14:42:51
3	Ivan Petrov	0.00 s	C	2019-08-22 14:14:39
4	Daniel	0.00 s	C	2021-10-25 13:07:42

#	User	Runtime	Language	Date
1	Norbert Voelker	0.07 s	Go	2021-08-30 00:02:21

#	User	Runtime	Language	Date
1	Pham Minh Tuan Bui	0.04 s	Java	2024-10-30 13:48:22
2	Thanh Nhan Nguyen	0.04 s	Java	2024-11-02 22:13:30
3	Ben Zheng	0.05 s	Java	2018-02-11 00:05:31
4	Bjørn Dons	0.05 s	Java	2018-11-15 23:17:01
5	Jason Portillo	0.06 s	Java	2018-02-03 19:34:21
6	Dante Bencivenga	0.06 s	Java	2018-02-03 19:37:56
7	Nguyễn Hùng Cường	0.06 s	Java	2018-09-11 05:59:16
8	Nam Phan Thành	0.06 s	Java	2018-09-11 06:03:54
9	Khánh Nguyễn Tiến	0.06 s	Java	2018-09-11 15:18:13
10	An Lê Hữu	0.06 s	Java	2018-09-12 10:40:05

#	User	Runtime	Language	Date
1	Christopher Walther	0.42 s	JavaScript (Node.js)	2021-04-10 16:35:01

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-06-04 11:37:00

#	User	Runtime	Language	Date
1	Nico Metger	0.18 s	Kotlin	2021-10-23 12:33:21
2	Adam Rankin	0.19 s	Kotlin	2023-09-09 02:36:19

#	User	Runtime	Language	Date
1	Quan Le Huynh Dong	0.00 s	Lua	2024-11-26 04:12:08

#	User	Runtime	Language	Date
1	Daniel Moyer	0.03 s	Python 2	2018-02-03 20:05:37
2	Fan Zhang	0.03 s	Python 2	2018-02-10 21:53:57
3	Cian Ruane	0.03 s	Python 2	2018-04-23 21:11:29
4	Jesper Öqvist	0.03 s	Python 2	2018-11-02 02:06:00
5	Hermon Mulat	0.03 s	Python 2	2018-12-02 04:15:08
6	Lars Åström	0.03 s	Python 2	2019-10-02 15:47:56
7	Maj Stenmark	0.03 s	Python 2	2019-10-02 19:57:20
8	Andreas Björklund	0.03 s	Python 2	2019-10-03 07:40:54
9	Noah Ó Donnaile	0.04 s	Python 2	2018-08-01 17:01:15
10	Måns Magnusson	0.04 s	Python 2	2019-10-02 15:40:03

#	User	Runtime	Language	Date
1	Ole Fredrik Borgundvåg Berg	0.02 s	Python 3	2017-12-11 15:40:38
2	Tran Tuong Minh Nguyen	0.02 s	Python 3	2018-06-09 08:06:11
3	Hien Le	0.02 s	Python 3	2018-06-10 04:57:55
4	Noah Ó Donnaile	0.02 s	Python 3	2018-08-01 16:59:53
5	Денис Соболев	0.02 s	Python 3	2019-04-25 11:47:36
6	Vincent Tandya	0.02 s	Python 3	2019-05-16 11:52:32
7	Peter Statevski	0.02 s	Python 3	2019-06-09 12:49:03
8	Austin Fernandez	0.02 s	Python 3	2019-08-14 20:24:43
9	Thore Husfeldt	0.02 s	Python 3	2019-10-02 15:40:50
10	Jason Cannon	0.02 s	Python 3	2019-10-02 20:49:49

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Ruby	2023-06-06 09:28:05
2	Chenzhang Hu	0.12 s	Ruby	2025-09-22 15:57:33

#	User	Runtime	Language	Date
1	Eric Pinter	0.00 s	Rust	2021-05-19 04:34:02
2	Kevin Moonen	0.00 s	Rust	2021-11-01 21:21:29
3	Anton Golov	0.00 s	Rust	2024-04-08 19:55:29
4	Elias Nodland	0.00 s	Rust	2024-04-10 19:34:17

#	User	Length	Language	Date
1	Thomas Feld	43	APL	2023-06-06 10:07:39

#	User	Length	Language	Date
1	Chenzhang Hu	65	Bash	2025-09-13 01:08:38

#	User	Length	Language	Date
1	Ehsan Shoja	499	C	2018-06-12 14:42:51
2	Daniel	690	C	2021-10-25 13:07:42
3	Hidden user	884	C	2017-12-10 19:49:22
4	Ivan Petrov	1628	C	2019-08-22 14:14:39

#	User	Length	Language	Date
1	Phạm Xuân Tích	244	C++	2018-09-22 12:08:51
2	Ngoc Hieu Vu	262	C++	2018-09-22 12:15:23
3	Việt Long Nguyễn	289	C++	2017-12-12 04:27:42
4	Dewita Sonya Tarabunga	293	C++	2018-03-24 09:05:34
5	Terry Cheong	294	C++	2018-09-22 08:22:56
6	Ky Quoc	303	C++	2018-04-22 07:56:44
7	黃浚瑜	315	C++	2021-07-14 15:04:41
8	黃浚誠	318	C++	2021-07-14 15:06:13
9	Ludo Pulles	319	C++	2018-11-05 19:59:09
10	Matthew Joseph Schallenkamp	320	C++	2018-11-01 01:42:11

#	User	Length	Language	Date
1	Norbert Voelker	950	Go	2021-08-30 00:02:21

#	User	Length	Language	Date
1	Anders Georg Frølich Hansen	241	Java	2023-11-03 01:40:40
2	Aarav Singh	425	Java	2018-02-03 19:58:39
3	Dat Nguyen Tran Quoc	458	Java	2024-11-01 11:14:29
4	Timothy Buzzelli	481	Java	2018-02-03 19:33:59
5	Jacob Magnuson	535	Java	2018-02-03 19:25:55
6	Viet Tin Le	571	Java	2024-10-31 23:34:50
7	Matt Peter	579	Java	2019-03-10 18:33:08
8	Doug Goodman	584	Java	2018-07-21 15:41:36
9	Aaron Michael	599	Java	2024-04-05 23:00:58
10	Arup Ratan Guha	645	Java	2018-02-03 19:50:58

#	User	Length	Language	Date
1	Christopher Walther	1700	JavaScript (Node.js)	2021-04-10 16:35:01

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	70	JavaScript (SpiderMonkey)	2023-06-04 11:43:27

#	User	Length	Language	Date
1	Nico Metger	550	Kotlin	2021-10-23 12:33:21
2	Adam Rankin	895	Kotlin	2023-09-09 02:36:19

#	User	Length	Language	Date
1	Quan Le Huynh Dong	550	Lua	2024-11-26 04:12:08

#	User	Length	Language	Date
1	Björn Magnusson	215	Python 2	2019-10-02 21:38:27
2	Måns Magnusson	227	Python 2	2019-10-02 15:40:03
3	Maj Stenmark	227	Python 2	2019-10-02 19:57:20
4	Daniel Moyer	231	Python 2	2018-02-03 20:05:37
5	Lars Åström	232	Python 2	2019-10-02 15:47:56
6	Andreas Björklund	321	Python 2	2019-10-03 07:40:54
7	Hermon Mulat	355	Python 2	2018-12-02 04:15:08
8	Jesper Öqvist	423	Python 2	2018-11-02 02:06:00
9	Fan Zhang	661	Python 2	2018-02-10 21:53:57
10	Cian Ruane	673	Python 2	2018-04-23 21:11:29

#	User	Length	Language	Date
1	Oskar Haarklou Veileborg	162	Python 3	2020-07-29 19:56:10
2	Peter Stauder	162	Python 3	2022-10-30 18:18:13
3	Hrant Hovhannisyan	181	Python 3	2025-05-23 06:43:05
4	Finn Stoldt	194	Python 3	2020-10-30 15:59:09
5	Samuel McDowell	195	Python 3	2024-09-21 20:12:27
6	Jesse Ventura	198	Python 3	2018-09-27 17:51:12
7	Guan Yang Ze	203	Python 3	2021-03-09 08:32:04
8	alexandre dewilde	216	Python 3	2023-08-01 17:20:43
9	Yong Mao	225	Python 3	2023-06-09 00:48:20
10	Casper Rysgaard	229	Python 3	2022-01-15 13:03:23

#	User	Length	Language	Date
1	Thomas Feld	70	Ruby	2023-06-06 09:44:13
2	Chenzhang Hu	166	Ruby	2025-09-22 15:57:33

#	User	Length	Language	Date
1	Elias Nodland	993	Rust	2024-04-10 19:34:17
2	Eric Pinter	1261	Rust	2021-05-19 04:34:02
3	Anton Golov	1528	Rust	2024-04-08 19:55:29
4	Kevin Moonen	2204	Rust	2021-11-01 21:21:29

Solution running time distribution