Problem A
Circle of Friends — Problem Statistics

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Submissions	446
Accepted submissions	91
Submission ratio	20.40%
Authors	80
Accepted authors	58
Author ratio	72.50%

#	User	Runtime	Language	Date
1	Siyong Huang	0.13 s	C++	2023-04-10 00:00:25
2	Dmitry Lyubshin	0.14 s	C++	2023-06-13 11:52:43
3	Antonio Molina Lovett	0.15 s	C++	2021-05-17 05:57:11
4	Richard Gong	0.19 s	C++	2021-04-23 04:21:03
5	Jingbang Chen	0.20 s	C++	2021-04-23 04:09:52
6	Shabab Mosharraf	0.20 s	C++	2024-10-02 07:32:24
7	Thomas Guo	0.21 s	C++	2023-04-09 23:33:40
8	Trung Dang	0.22 s	C++	2021-04-23 03:34:59
9	William Li	0.23 s	C++	2021-04-23 03:30:21
10	Jay Leeds	0.24 s	C++	2021-04-23 03:50:20

#	User	Runtime	Language	Date
1	Hidden user	1.28 s	Java	2023-02-04 22:32:32
2	Ray Bai	6.21 s	Java	2021-12-31 20:08:00

#	User	Runtime	Language	Date
1	Jacob Huebner	0.64 s	Kotlin	2023-06-06 11:19:25

#	User	Length	Language	Date
1	Dmitry Lyubshin	933	C++	2023-06-13 11:52:43
2	Jingbang Chen	1079	C++	2021-04-23 04:09:52
3	Yen-Hsiang Chang	1132	C++	2021-05-02 06:21:52
4	Yousof Osama	1143	C++	2025-05-05 14:54:50
5	James Shi	1775	C++	2021-04-27 02:30:04
6	Ziyuan Zhang	1833	C++	2021-05-23 07:26:40
7	Vince Alek	1841	C++	2021-04-23 04:49:56
8	Robert Lee	1852	C++	2022-11-05 09:59:48
9	Eric Hu	1953	C++	2021-08-09 07:12:08
10	Nick Wu	2003	C++	2021-05-17 03:44:49

#	User	Length	Language	Date
1	Hidden user	3586	Java	2023-02-04 22:32:32
2	Ray Bai	4074	Java	2021-12-31 20:08:00

#	User	Length	Language	Date
1	Jacob Huebner	2715	Kotlin	2023-06-06 11:19:25

Solution running time distribution