Problem F
Key to Knowledge — Problem Statistics

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Submissions	375
Accepted submissions	103
Submission ratio	27.47%
Authors	112
Full solves [?]	77
Full solve Ratio	68.75%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.48 s	C	2019-06-26 10:04:20
2	Josenildo Silva	0.51 s	C	2018-04-21 17:43:07

#	User	Runtime	Language	Date
1	Neal Zane	0.17 s	C++	2015-12-16 08:45:30
2	Nils Gustafsson	0.20 s	C++	2019-05-29 19:54:40
3	Lin Lee	0.21 s	C++	2016-11-12 01:56:53
4	Hidden user	0.22 s	C++	2020-07-21 11:55:45
5	Andy Huang	0.27 s	C++	2016-04-07 03:04:55
6	Brandon Zhang	0.30 s	C++	2018-06-06 20:56:28
7	Lingsong Zeng	0.33 s	C++	2015-10-18 04:56:05
8	Exvayn SO	0.33 s	C++	2016-08-11 13:16:54
9	Saketh Are	0.34 s	C++	2015-10-11 23:08:14
10	Matthew Joseph Schallenkamp	0.34 s	C++	2018-01-27 22:25:00

#	User	Runtime	Language	Date
1	Ryan Chew	1.50 s	Haskell	2019-08-05 12:44:03

#	User	Runtime	Language	Date
1	Bjørn Dons	1.13 s	Java	2020-07-21 22:02:26
2	Benjamin Reidys	1.45 s	Java	2019-06-24 04:13:12
3	Nick Wu	1.69 s	Java	2016-02-13 18:28:14

#	User	Runtime	Language	Date
1	Andreas Björklund	5.23 s	Python 2	2020-08-31 06:13:23

#	User	Runtime	Language	Date
1	Duoduo Zhao	2.37 s	Python 3	2025-07-23 07:40:29
2	Isaac Lee	4.24 s	Python 3	2020-05-05 04:58:13
3	Hidden user	6.80 s	Python 3	2024-05-29 04:55:30

#	User	Length	Language	Date
1	Josenildo Silva	2283	C	2018-04-21 17:43:07
2	Ivan Petrov	2846	C	2019-06-26 10:04:20

#	User	Length	Language	Date
1	William Gan	1142	C++	2016-12-28 10:39:09
2	Jeremy Lim	1175	C++	2024-08-03 11:06:45
3	Prabowo Djonatan	1177	C++	2018-11-05 17:02:42
4	Jackson Abascal	1188	C++	2016-11-30 21:11:32
5	Jerry Mao	1443	C++	2017-06-13 04:50:28
6	Antonio Molina Lovett	1483	C++	2016-12-17 05:10:30
7	Victor Sena Molero	1532	C++	2017-09-06 03:19:51
8	Brandon Zhang	1532	C++	2018-06-06 07:26:41
9	Ragur Krishnan	1555	C++	2018-12-22 05:07:56
10	Kevin Liu	1583	C++	2016-04-13 21:07:55

#	User	Length	Language	Date
1	Ryan Chew	3250	Haskell	2019-08-05 12:28:00

#	User	Length	Language	Date
1	Nick Wu	4349	Java	2016-02-13 18:28:14
2	Benjamin Reidys	5284	Java	2019-06-24 04:13:12
3	Bjørn Dons	7233	Java	2020-07-21 22:02:26

#	User	Length	Language	Date
1	Andreas Björklund	1534	Python 2	2020-08-31 06:13:23

#	User	Length	Language	Date
1	Hidden user	1051	Python 3	2024-05-29 04:55:30
2	Isaac Lee	2352	Python 3	2020-05-05 04:58:13
3	Duoduo Zhao	3455	Python 3	2025-07-23 07:40:29

Solution running time distribution