Problem B
Keeping the Dogs Apart — Problem Statistics

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Submissions	978
Accepted submissions	276
Submission ratio	28.22%
Authors	220
Accepted authors	176
Author ratio	80.00%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.05 s	C	2019-05-28 08:37:45
2	David Brickeen	0.37 s	C	2016-10-25 02:21:25

#	User	Runtime	Language	Date
1	Robert Chung	0.03 s	C++	2024-10-09 02:04:56
2	Yanan Wang	0.04 s	C++	2016-10-13 10:20:10
3	Joakim Blikstad	0.05 s	C++	2016-10-13 03:52:14
4	Asado Familiar	0.05 s	C++	2016-11-11 14:03:39
5	敬林晓	0.05 s	C++	2017-10-03 14:59:10
6	Augusto Bernardi	0.05 s	C++	2018-03-21 05:32:28
7	Hidden user	0.05 s	C++	2018-03-21 05:32:51
8	Dmitry Lyubshin	0.05 s	C++	2018-06-25 10:23:29
9	Pablo Alfredo Messina Gallardo	0.05 s	C++	2018-08-08 20:49:23
10	Jonathan Alexander Carrillo Cortes	0.05 s	C++	2020-03-09 05:12:24

#	User	Runtime	Language	Date
1	Ryan Yates	1.07 s	Haskell	2020-07-14 00:40:47

#	User	Runtime	Language	Date
1	Arup Ratan Guha	0.35 s	Java	2017-05-11 13:05:02
2	James Black	0.36 s	Java	2018-06-23 20:12:40
3	David Brink	0.37 s	Java	2016-10-15 18:54:52
4	Andrew Polizzotto	0.39 s	Java	2021-01-13 23:26:28
5	Satvik Choudhary	0.40 s	Java	2020-09-02 00:40:37
6	Shirui Chen	0.50 s	Java	2017-10-25 20:52:09
7	Benjamin Reidys	0.50 s	Java	2019-07-31 02:25:34
8	Timothy Buzzelli	0.59 s	Java	2016-10-23 00:37:04
9	Alex Coleman	0.59 s	Java	2017-03-02 19:43:46
10	Jørund Leknes	0.62 s	Java	2016-10-11 16:47:18

#	User	Runtime	Language	Date
1	Aslak Bergersen	0.23 s	Python 2	2016-10-09 14:06:49
2	Jesper Öqvist	0.25 s	Python 2	2018-04-25 13:12:48
3	Freek van Walderveen	0.31 s	Python 2	2016-10-08 15:57:43
4	Andreas Björklund	0.31 s	Python 2	2019-03-20 19:36:07
5	Matias Frank Jensen	0.40 s	Python 2	2019-10-06 17:09:01
6	Maj Stenmark	0.41 s	Python 2	2018-05-04 23:06:35
7	Li Shuo	0.78 s	Python 2	2022-03-28 02:41:09
8	Hidden user	2.11 s	Python 2	2016-10-11 20:20:08

#	User	Runtime	Language	Date
1	Alexandre Charland	0.26 s	Python 3	2025-05-21 04:07:55
2	Thomas Lacasse	0.34 s	Python 3	2025-05-25 16:43:38
3	Godmar Back	0.37 s	Python 3	2022-09-12 05:58:42
4	Duoduo Zhao	0.48 s	Python 3	2025-07-24 16:48:20
5	Zak Smith	0.50 s	Python 3	2020-09-13 18:04:19
6	Glen Lim	0.60 s	Python 3	2020-09-13 18:08:12
7	Paul Swingle	0.84 s	Python 3	2022-11-15 05:55:16
8	Rafael Sheen Acuna	1.30 s	Python 3	2025-07-05 10:47:46
9	Hidden user	2.26 s	Python 3	2018-08-10 19:45:40
10	Josenildo Silva	2.45 s	Python 3	2018-06-23 02:42:05

#	User	Runtime	Language	Date
1	Niklas Sandén	0.04 s	Rust	2022-10-06 23:04:32
2	Hidden user	0.19 s	Rust	2025-06-21 14:06:50

#	User	Length	Language	Date
1	Ivan Petrov	2302	C	2019-05-28 08:37:45
2	David Brickeen	2561	C	2016-10-25 02:21:25

#	User	Length	Language	Date
1	Arthur Costa	1325	C++	2017-03-09 13:19:56
2	Joakim Blikstad	1342	C++	2016-10-13 03:51:07
3	Hidden user	1342	C++	2017-03-09 18:35:37
4	Gerth Stølting Brodal	1355	C++	2016-10-11 21:43:45
5	Johan Wind	1386	C++	2018-05-15 03:01:29
6	Mikko Sysikaski	1497	C++	2016-10-08 14:11:17
7	Elias Lolck	1556	C++	2022-10-02 23:11:14
8	Neal Zane	1566	C++	2018-04-27 05:55:59
9	Victor Lecomte	1606	C++	2018-04-23 15:27:57
10	Atli Fannar Franklín	1647	C++	2023-07-07 10:15:45

#	User	Length	Language	Date
1	Ryan Yates	1878	Haskell	2020-07-14 00:40:47

#	User	Length	Language	Date
1	Doug Goodman	1693	Java	2018-01-21 19:48:47
2	Xuehui Chen	2699	Java	2018-07-11 06:37:06
3	Reid Sendroff	3037	Java	2025-07-31 22:24:46
4	James Black	3619	Java	2018-06-23 20:12:40
5	Andrew Polizzotto	3687	Java	2021-01-13 23:26:28
6	Måns Magnusson	3988	Java	2016-10-09 19:35:45
7	Hidden user	4022	Java	2017-02-12 05:59:44
8	Alex Coleman	4100	Java	2017-03-02 19:43:46
9	Satvik Choudhary	4116	Java	2020-09-02 00:40:37
10	Jørund Leknes	4172	Java	2016-10-11 16:47:18

#	User	Length	Language	Date
1	Li Shuo	1145	Python 2	2022-03-28 02:41:09
2	Andreas Björklund	1362	Python 2	2019-03-20 19:36:07
3	Freek van Walderveen	1921	Python 2	2016-10-08 15:57:43
4	Maj Stenmark	1994	Python 2	2018-05-04 23:06:35
5	Hidden user	2022	Python 2	2016-10-11 20:38:28
6	Matias Frank Jensen	2331	Python 2	2019-10-06 17:09:01
7	Jesper Öqvist	2528	Python 2	2018-04-25 13:12:48
8	Aslak Bergersen	3363	Python 2	2016-10-09 14:06:49

#	User	Length	Language	Date
1	Nic Washbourne	803	Python 3	2023-11-12 04:55:29
2	Alexandre Charland	926	Python 3	2025-05-21 04:07:55
3	Xuehui Chen	974	Python 3	2018-07-11 06:01:55
4	Josenildo Silva	1004	Python 3	2018-06-23 02:42:05
5	Inggriany Dwitami	1050	Python 3	2018-09-22 09:41:14
6	Rafael Sheen Acuna	1298	Python 3	2025-07-05 10:47:46
7	Godmar Back	1376	Python 3	2022-09-12 05:58:42
8	Zak Smith	1643	Python 3	2020-09-13 18:04:19
9	Yosuke Mizutani	1892	Python 3	2020-09-10 07:09:48
10	Glen Lim	1899	Python 3	2020-09-13 18:08:12

#	User	Length	Language	Date
1	Hidden user	12322	Rust	2025-06-21 14:06:50
2	Niklas Sandén	23085	Rust	2022-10-06 23:04:32

Solution running time distribution