Problem B
Board Covering — Problem Statistics

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Submissions	191
Accepted submissions	25
Submission ratio	13.09%
Authors	50
Accepted authors	21
Author ratio	42.00%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.00 s	C	2020-01-14 15:27:26

#	User	Runtime	Language	Date
1	Van Hanh Pham	0.00 s	C++	2017-11-07 10:29:05
2	Huangjie Zhao	0.00 s	C++	2017-11-14 12:00:30
3	Nguyen Thanh Trung	0.00 s	C++	2017-12-15 08:27:50
4	Hidden user	0.00 s	C++	2019-03-18 14:19:00
5	SiBi	0.00 s	C++	2019-05-12 06:36:19
6	Tobias Glimmerfors	0.00 s	C++	2020-12-06 22:20:55
7	Nguyen Cao Duy	0.00 s	C++	2022-12-10 09:54:01
8	Văn Hiệp	0.00 s	C++	2023-02-25 19:56:13
9	Jeremy Lim	0.00 s	C++	2025-07-23 06:51:36
10	Bjarki Ágúst Guðmundsson	0.01 s	C++	2019-05-11 01:02:01

#	User	Runtime	Language	Date
1	Quân Anh	0.07 s	Java	2024-05-09 11:39:46

#	User	Runtime	Language	Date
1	Hidden user	0.08 s	Python 2	2018-05-25 19:46:25
2	Oskar Ottander	0.13 s	Python 2	2020-02-27 18:39:51
3	Jesper Öqvist	0.24 s	Python 2	2018-09-20 20:04:10

#	User	Runtime	Language	Date
1	Alexei Fedotov	0.33 s	Python 3	2019-01-22 14:38:05

#	User	Length	Language	Date
1	Ivan Petrov	7538	C	2020-01-14 15:27:26

#	User	Length	Language	Date
1	Văn Hiệp	2145	C++	2023-02-25 19:56:13
2	Nguyen Cao Duy	4177	C++	2022-12-10 09:54:01
3	SiBi	4186	C++	2019-05-12 06:36:19
4	Jeremy Lim	4644	C++	2025-07-23 06:51:36
5	鹿目圆	5655	C++	2019-03-18 14:05:08
6	Hidden user	5922	C++	2019-03-18 14:06:32
7	Evan Michael Bailey	6050	C++	2021-09-22 08:14:52
8	Tobias Glimmerfors	6179	C++	2020-12-06 22:20:55
9	David Avellan-Hultman	6357	C++	2020-12-07 23:08:05
10	Nguyen Qui Vinh Quang	7900	C++	2021-12-21 15:40:47

#	User	Length	Language	Date
1	Quân Anh	5571	Java	2024-05-09 11:39:46

#	User	Length	Language	Date
1	Hidden user	2727	Python 2	2018-05-25 19:46:25
2	Jesper Öqvist	4268	Python 2	2018-09-20 20:04:10
3	Oskar Ottander	6466	Python 2	2020-02-27 18:39:51

#	User	Length	Language	Date
1	Alexei Fedotov	5167	Python 3	2019-01-22 14:38:05

Solution running time distribution