Problem J
All Friends — Problem Statistics

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Submissions	1475
Accepted submissions	276
Submission ratio	18.71%
Authors	245
Accepted authors	127
Author ratio	51.84%

#	User	Runtime	Language	Date
1	Jesper Öqvist	0.03 s	C	2018-07-28 15:26:44
2	Henning Koehler	0.04 s	C	2016-05-02 03:13:12
3	Andy Huang	0.04 s	C	2017-10-11 09:45:07
4	Ivan Petrov	0.04 s	C	2019-04-30 09:34:57
5	Chengyu Lin	0.04 s	C	2019-09-14 19:55:08
6	Marcus Larsson	0.05 s	C	2013-03-28 14:58:13

#	User	Runtime	Language	Date
1	Sergio Vieri	0.00 s	C++	2018-02-14 06:22:55
2	Carl Frendin	0.01 s	C++	2014-04-02 18:34:43
3	Hidden user	0.01 s	C++	2015-01-14 19:27:33
4	Xi Lin	0.01 s	C++	2015-06-15 15:02:43
5	Syx Pek	0.01 s	C++	2016-03-07 08:21:26
6	Lin Lee	0.01 s	C++	2017-05-06 14:27:26
7	高宇	0.01 s	C++	2018-09-14 05:40:26
8	Bohao Sun	0.01 s	C++	2018-09-23 07:19:15
9	Antoni Guz	0.01 s	C++	2018-10-22 21:00:26
10	SiBi	0.01 s	C++	2019-02-19 05:56:35

#	User	Runtime	Language	Date
1	Simon Klein	0.19 s	Java	2013-03-13 08:55:32
2	Axel Lewenhaupt	0.30 s	Java	2013-03-14 20:44:13
3	Håkan Warnquist	0.30 s	Java	2013-03-19 16:30:31
4	Tobias Andersson	0.30 s	Java	2014-04-02 17:09:39
5	Hà Minh Ngọc	0.38 s	Java	2016-06-28 20:22:06
6	Erik Odenman	0.40 s	Java	2013-04-07 15:32:29
7	Michael Sullivan	0.45 s	Java	2015-10-13 18:50:41
8	Erik Thormarker	0.51 s	Java	2015-06-04 10:01:52
9	Lars Hummelgren	0.61 s	Java	2016-02-28 09:59:50
10	Martin Berntsson	0.67 s	Java	2013-04-10 12:44:30

#	User	Runtime	Language	Date
1	Andreas Björklund	0.65 s	Python 2	2018-12-09 21:56:17

#	User	Runtime	Language	Date
1	Duoduo Zhao	0.23 s	Python 3	2025-07-11 00:25:16
2	Kadriye Yildiz	0.26 s	Python 3	2024-08-22 22:47:47
3	Jonas Nockert	0.50 s	Python 3	2015-11-05 13:18:43

#	User	Length	Language	Date
1	Jesper Öqvist	2325	C	2018-07-28 15:26:44
2	Ivan Petrov	3065	C	2019-04-30 09:34:57
3	Andy Huang	3311	C	2017-10-11 09:45:07
4	Chengyu Lin	3311	C	2019-09-14 19:55:08
5	Henning Koehler	3368	C	2016-05-02 03:13:12
6	Marcus Larsson	3481	C	2013-03-28 14:58:13

#	User	Length	Language	Date
1	Sergio Vieri	685	C++	2018-02-14 06:22:55
2	Johan Wind	757	C++	2019-04-29 20:58:19
3	Rezwan Arefin	899	C++	2022-03-15 14:26:17
4	Magnus Hegdahl	909	C++	2021-09-08 00:32:07
5	Siyong Huang	933	C++	2019-04-15 04:37:36
6	Brandon Zhang	958	C++	2020-08-28 07:13:13
7	Zac Friggstad	972	C++	2022-02-03 22:05:47
8	Oskar Haarklou Veileborg	989	C++	2020-06-02 15:01:35
9	Hidden user	1015	C++	2020-07-11 18:14:26
10	Jordi Rodríguez Manso	1040	C++	2018-08-29 12:18:09

#	User	Length	Language	Date
1	Axel Lewenhaupt	3656	Java	2013-03-14 20:44:13
2	Simon Klein	3661	Java	2013-03-13 09:02:29
3	Hà Minh Ngọc	3743	Java	2016-06-28 20:13:30
4	Erik Odenman	3800	Java	2013-04-07 15:32:29
5	Olav Røthe Bakken	3994	Java	2018-06-07 12:57:53
6	Johan Stenberg	4712	Java	2014-03-25 15:22:46
7	Håkan Warnquist	4862	Java	2013-03-19 16:30:31
8	Erik Thormarker	4940	Java	2015-06-03 23:08:36
9	Tobias Andersson	5110	Java	2014-04-02 17:09:39
10	Lars Hummelgren	5144	Java	2016-02-28 09:59:50

#	User	Length	Language	Date
1	Andreas Björklund	1626	Python 2	2018-12-09 21:56:17

#	User	Length	Language	Date
1	Kadriye Yildiz	1865	Python 3	2024-08-22 22:47:47
2	Duoduo Zhao	2032	Python 3	2025-07-11 00:25:16
3	Jonas Nockert	2597	Python 3	2015-11-05 13:18:43

Solution running time distribution