Problem I
Count von Walken's Fence — Problem Statistics

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Submissions	476
Accepted submissions	140
Submission ratio	29.41%
Authors	135
Accepted authors	101
Author ratio	74.81%

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	C	2014-04-13 14:12:25
2	Hidden user	0.00 s	C	2017-07-16 07:20:07
3	Ivan Petrov	0.00 s	C	2019-07-03 09:26:41
4	Hidden user	0.00 s	C	2025-06-13 14:19:00

#	User	Runtime	Language	Date
1	Bas te Kolste	0.02 s	C#	2015-09-05 15:56:08

#	User	Runtime	Language	Date
1	Bjørn Dons	0.06 s	Java	2023-07-18 21:52:32
2	Patrik Hörnqvist	0.07 s	Java	2014-10-06 23:35:52
3	Erik Baalhuis	0.07 s	Java	2016-08-01 00:01:08
4	Jimmy Mårdell	0.08 s	Java	2014-04-13 11:54:00
5	Fredrik Persson	0.08 s	Java	2014-10-03 16:21:03
6	Doug Goodman	0.08 s	Java	2018-07-18 20:19:12
7	Nick Wu	0.14 s	Java	2015-10-18 13:48:33
8	Jan Štola	0.17 s	Java	2015-04-22 17:59:18
9	Josenildo Silva	0.17 s	Java	2017-12-23 20:43:15
10	Hidden user	0.22 s	Java	2023-11-27 12:47:48

#	User	Runtime	Language	Date
1	Thomas Dybdahl Ahle	0.03 s	Python 2	2014-09-27 16:07:27

#	User	Runtime	Language	Date
1	Rastislav Vaško	0.02 s	Python 3	2014-04-13 14:48:54
2	Nils Gustafsson	0.02 s	Python 3	2015-04-22 22:09:32
3	Tai Tze Kin	0.04 s	Python 3	2025-01-16 16:46:59
4	Reiden Ong	0.04 s	Python 3	2025-01-17 10:56:37
5	Brandon Lau	0.04 s	Python 3	2025-01-17 11:18:01
6	Dominic Berzin Chua Way Gin	0.04 s	Python 3	2025-01-19 05:36:59
7	Bryan Juniano	0.04 s	Python 3	2025-05-04 04:18:05
8	Harry Zhang	0.04 s	Python 3	2025-08-26 14:17:16
9	Jerry Xu	0.05 s	Python 3	2023-05-23 09:13:44
10	Christian Blumenthal	0.05 s	Python 3	2023-07-18 21:43:10

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Ruby	2023-08-31 08:44:42

#	User	Length	Language	Date
1	Hidden user	518	C	2017-07-16 07:20:07
2	Hidden user	592	C	2025-06-13 14:19:00
3	Ivan Petrov	594	C	2019-07-03 09:26:41
4	Hidden user	717	C	2014-04-13 14:12:25

#	User	Length	Language	Date
1	Bas te Kolste	1613	C#	2015-09-05 15:56:08

#	User	Length	Language	Date
1	David Wärn	328	C++	2015-04-25 17:53:01
2	Alexander Skidanov	353	C++	2024-10-24 09:50:44
3	Eric Schneider	415	C++	2015-10-05 05:14:10
4	Jeremy Lim	415	C++	2023-12-16 18:14:07
5	Yeoh Han Yi	432	C++	2025-04-15 14:32:42
6	Gautier Izacard	443	C++	2017-09-10 11:42:46
7	Hrant Hovhannisyan	468	C++	2017-06-17 10:23:18
8	Lukas Polacek	483	C++	2015-02-18 00:08:53
9	Hidden user	508	C++	2024-12-31 17:27:29
10	Tạ Quang Trung	523	C++	2025-01-16 13:57:16

#	User	Length	Language	Date
1	Hidden user	706	Java	2023-11-27 12:47:48
2	Josenildo Silva	716	Java	2017-12-23 20:43:15
3	Patrik Hörnqvist	789	Java	2014-10-06 23:23:23
4	Jan Štola	812	Java	2015-04-22 17:59:18
5	Doug Goodman	888	Java	2018-07-18 20:19:12
6	Fredrik Persson	1161	Java	2014-10-03 16:21:03
7	Erik Baalhuis	1224	Java	2016-08-01 00:01:08
8	Nick Wu	2510	Java	2015-10-18 13:48:33
9	Jimmy Mårdell	3090	Java	2014-04-13 11:54:00
10	Bjørn Dons	5867	Java	2023-07-18 21:52:32

#	User	Length	Language	Date
1	Thomas Dybdahl Ahle	665	Python 2	2014-09-27 16:07:27

#	User	Length	Language	Date
1	Yong Mao	200	Python 3	2023-09-26 23:18:40
2	Nicholas Russell Saerang	218	Python 3	2023-09-04 03:18:23
3	Christian Blumenthal	240	Python 3	2023-08-17 00:01:05
4	Tai Tze Kin	248	Python 3	2025-01-16 16:46:59
5	Bryan Juniano	261	Python 3	2025-05-04 04:18:05
6	Shehab Ahmed Hatem	263	Python 3	2023-11-13 20:26:48
7	Clement Oh	277	Python 3	2023-09-20 17:13:49
8	Harry Zhang	282	Python 3	2025-08-26 14:17:16
9	Rastislav Vaško	351	Python 3	2014-04-13 14:48:54
10	Kaaden RumanCam	362	Python 3	2023-05-22 01:46:52

#	User	Length	Language	Date
1	Thomas Feld	88	Ruby	2023-08-31 08:51:23

Solution running time distribution