Problem E
Is-A? Has-A? Who Knowz-A?

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Problem statistics

Submissions	1465
Accepted submissions	263
Submission ratio	17.95%
Authors	304
Accepted authors	186
Author ratio	61.18%

#	User	Runtime	Date
1	Ivan Petrov	0.27 s	2017-11-30 15:26:21

#	User	Runtime	Date
1	Muhammad Irham Rasyidi	0.02 s	2018-05-03 18:57:02
2	Lin Lee	0.02 s	2018-11-18 11:40:30
3	Rahul Rajesh	0.02 s	2019-04-04 11:55:18
4	Harrison Shen	0.02 s	2020-07-14 23:43:52
5	Alex Dai	0.04 s	2017-11-24 11:59:47
6	Serban Iorga	0.04 s	2018-01-07 11:51:09
7	Vương Thiện Trung	0.04 s	2019-08-20 00:52:14
8	Hidden user	0.04 s	2019-10-27 01:57:14
9	呂 爾軒	0.04 s	2019-11-08 18:56:29
10	Nils Gustafsson	0.04 s	2020-03-12 19:07:30

#	User	Runtime	Date
1	Roddy MacCrimmon	2.72 s	2017-11-06 00:12:44

#	User	Runtime	Date
1	Richard Peng	0.37 s	2017-12-09 17:53:49
2	Nick Wu	0.38 s	2017-10-28 19:21:29
3	Bjørn Dons	0.47 s	2023-07-29 21:40:30
4	Hidden user	0.62 s	2018-10-18 18:54:48
5	Brendan Jones	0.77 s	2022-11-12 00:34:23
6	Ariana Herbst	0.83 s	2018-10-13 20:39:48
7	Aarav Singh	0.83 s	2018-10-30 02:35:52
8	Yue (Rachel) Guo	1.02 s	2018-10-21 01:27:55
9	Godmar Back	1.03 s	2018-10-14 16:58:35
10	Erik Tjøswold	1.06 s	2017-11-13 14:59:29

#	User	Runtime	Date
1	Nicholas Johnson	0.88 s	2021-04-22 01:29:25
2	Kiel Dowdle	0.91 s	2021-04-19 01:03:55
3	Jacob Huebner	1.17 s	2021-04-15 11:53:56
4	Ronald Cruz	1.23 s	2017-12-13 05:41:01

#	User	Runtime	Date
1	Måns Magnusson	0.21 s	2018-09-22 22:36:13
2	Maj Stenmark	0.24 s	2018-09-16 20:21:13
3	Robert Kramer	1.01 s	2017-10-30 00:07:18
4	Hidden user	2.04 s	2017-11-01 15:24:26
5	Can Liu	2.72 s	2018-10-16 07:33:07

#	User	Runtime	Date
1	Måns Magnusson	0.55 s	2021-09-23 17:48:47
2	Edward Gao	1.25 s	2021-03-04 02:30:15
3	Justin Gou	1.67 s	2020-12-12 22:39:04
4	Nicholas Russell Saerang	2.77 s	2023-08-06 21:21:56
5	Baz Baz	2.93 s	2018-10-11 04:03:06

#	User	Length	Date
1	Ivan Petrov	3412	2017-11-30 15:26:21

#	User	Length	Date
1	Hao Du	1053	2020-02-28 02:50:47
2	Jeffrey Lee	1091	2018-05-08 03:41:55
3	Markus Mathiasen	1169	2023-08-07 16:05:51
4	Pu Chen	1183	2017-11-10 20:15:43
5	Samuel Ferreira	1201	2017-11-01 17:20:11
6	Hidden user	1209	2018-10-13 19:31:38
7	박상수	1238	2018-01-18 18:57:15
8	Sidhant Bansal	1254	2018-05-10 11:59:47
9	Ernest Ng Zi Xuan	1261	2023-08-06 16:27:01
10	Renzo Gonzalo Gómez Diaz	1267	2021-08-05 22:28:29

#	User	Length	Date
1	Roddy MacCrimmon	1181	2017-11-06 00:12:44

#	User	Length	Date
1	Doug Goodman	1432	2017-10-29 15:08:03
2	David Wang	1861	2020-12-12 22:11:26
3	Eimhin McDonald	2023	2017-10-31 04:43:20
4	Darko Aleksic	2063	2019-10-26 05:18:58
5	Jiru Xu	2228	2017-11-03 05:15:34
6	Godmar Back	2331	2018-10-14 16:53:37
7	Nick Jarvis	2343	2018-10-27 19:29:27
8	Richard Peng	2457	2017-12-09 17:53:49
9	Nick Wu	2457	2017-10-28 19:21:29
10	Alex Lind	2465	2018-10-16 18:03:57

#	User	Length	Date
1	Ronald Cruz	1311	2017-12-13 05:41:01
2	Jacob Huebner	1734	2021-04-15 11:53:56
3	Nicholas Johnson	2803	2021-04-22 01:29:25
4	Kiel Dowdle	3684	2021-04-19 01:03:55

#	User	Length	Date
1	Måns Magnusson	1271	2018-09-22 22:36:13
2	Robert Kramer	1287	2017-10-30 00:07:18
3	Can Liu	1518	2018-10-16 07:33:07
4	Maj Stenmark	1611	2018-09-16 20:26:21
5	Hidden user	2017	2017-11-01 15:24:26

#	User	Length	Date
1	Nicholas Russell Saerang	993	2023-08-06 21:25:45
2	Edward Gao	1407	2021-03-04 02:30:15
3	Måns Magnusson	1850	2021-09-23 17:48:47
4	Justin Gou	1983	2020-12-12 22:39:04
5	Baz Baz	3118	2018-10-11 04:03:06

Solution running time distribution