Problem F
Virtual Friends — Problem Statistics

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Submissions	1933
Accepted submissions	324
Submission ratio	16.76%
Authors	378
Full solves [?]	268
Full solve Ratio	70.90%

#	User	Runtime	Language	Date
1	Michael Zilber	0.03 s	C++	2025-09-15 23:49:44
2	Nicholas Stewart	0.04 s	C++	2021-09-17 11:37:46
3	Mohamed Ben Mekki	0.11 s	C++	2022-09-16 21:57:10
4	Liam Scalzulli	0.12 s	C++	2022-07-28 20:24:26
5	Mihail Anghelici	0.12 s	C++	2022-09-14 00:18:41
6	Vương Thiện Kiên	0.12 s	C++	2023-09-14 06:13:47
7	Jiahui Wang	0.12 s	C++	2024-09-15 00:12:18
8	Tian Bai	0.16 s	C++	2022-09-14 23:15:12
9	Jiechen Zhang	0.18 s	C++	2022-01-12 18:23:34
10	Jason Hum	0.18 s	C++	2022-01-15 05:46:20

#	User	Runtime	Language	Date
1	Dan Greco	0.49 s	Haskell	2025-09-13 20:23:12

#	User	Runtime	Language	Date
1	Arshia Rashedzadeh	0.32 s	Java	2025-09-12 03:16:09
2	Svyatoslav Sklokin	0.36 s	Java	2021-09-17 17:06:47
3	Nehir Özsunar	0.39 s	Java	2025-09-18 23:46:37
4	Éléa Dufresne	0.44 s	Java	2021-09-16 22:17:46
5	Bogdan Timercan	0.46 s	Java	2025-09-11 19:17:33
6	Leora Klee	0.52 s	Java	2024-09-19 04:58:31
7	Hidden user	0.53 s	Java	2022-09-18 04:43:48
8	Barry Chen	0.57 s	Java	2024-09-17 19:32:06
9	Justin Huang	0.79 s	Java	2021-09-15 23:36:04
10	Justin Bondurant-David	0.80 s	Java	2021-09-11 01:24:05

#	User	Runtime	Language	Date
1	Cameron Jeffery	0.16 s	Python 3	2025-09-18 17:29:54
2	Eli Kohn	0.16 s	Python 3	2025-09-19 04:18:02
3	Christopher Ghosn	0.17 s	Python 3	2025-09-19 05:39:39
4	Hidden user	0.18 s	Python 3	2024-09-17 01:00:18
5	Gabriel Caballero	0.20 s	Python 3	2024-09-18 21:21:27
6	John Scott	0.20 s	Python 3	2025-09-18 18:40:43
7	Gulce Apaydin	0.23 s	Python 3	2024-09-16 19:13:07
8	Zheng Yu	0.26 s	Python 3	2022-09-17 06:56:58
9	Philip Luo	0.26 s	Python 3	2024-09-15 03:26:31
10	Matthew Barg	0.26 s	Python 3	2024-09-18 18:15:12

#	User	Runtime	Language	Date
1	Qi Zeng	0.18 s	Python 3 with NumPy	2025-09-18 21:07:37
2	Yutong Liu	0.21 s	Python 3 with NumPy	2025-09-18 00:23:17
3	Hidden user	0.45 s	Python 3 with NumPy	2024-09-17 03:18:32
4	Ethan Church	0.72 s	Python 3 with NumPy	2025-09-18 18:42:28
5	Hidden user	0.72 s	Python 3 with NumPy	2025-09-19 03:55:23
6	Logan Labossiere	0.89 s	Python 3 with NumPy	2023-09-16 01:05:28

#	User	Runtime	Language	Date
1	Sindbad Walter	0.12 s	Rust	2023-09-15 15:17:24
2	Louis Bouchard	0.17 s	Rust	2024-09-18 05:00:00

#	User	Length	Language	Date
1	Maoyu Wang	815	C++	2022-01-18 00:32:45
2	Nikola Katov	851	C++	2023-09-08 14:02:25
3	Ang Dai	885	C++	2025-09-14 20:37:17
4	Mykyta Bychkov	927	C++	2024-09-17 22:36:45
5	Michael Zilber	1014	C++	2025-09-15 23:49:44
6	Liam Scalzulli	1040	C++	2022-07-28 20:26:00
7	Jiechen Zhang	1058	C++	2022-01-12 18:23:34
8	Vương Thiện Kiên	1061	C++	2023-09-14 06:13:47
9	Mona Wang	1162	C++	2024-09-17 02:30:55
10	Mohamed Ben Mekki	1207	C++	2022-09-16 21:57:10

#	User	Length	Language	Date
1	Dan Greco	1418	Haskell	2025-09-13 20:19:02

#	User	Length	Language	Date
1	Nehir Özsunar	1549	Java	2025-09-18 23:46:37
2	Barry Chen	1971	Java	2024-09-17 19:32:06
3	Bogdan Timercan	2099	Java	2025-09-11 19:17:33
4	Justin Huang	2100	Java	2021-09-15 23:36:04
5	hilal elghoulti	2124	Java	2024-09-13 04:14:47
6	Arshia Rashedzadeh	2162	Java	2025-09-12 03:16:09
7	Fuxiao Gao	2219	Java	2023-09-13 03:26:53
8	selyann berrada	2337	Java	2024-09-13 03:54:45
9	Leora Klee	2346	Java	2024-09-19 04:58:31
10	Molly Jacobsen	2371	Java	2021-09-17 14:53:07

#	User	Length	Language	Date
1	Henri Lemoine	427	Python 3	2022-09-10 06:03:10
2	Sam Chen	577	Python 3	2025-09-18 15:11:16
3	Hidden user	600	Python 3	2025-09-16 04:33:13
4	Zahra Mustin	606	Python 3	2025-09-13 18:11:09
5	Yuyang Cao	619	Python 3	2022-09-18 05:09:03
6	Sarah Abou-Zahr	625	Python 3	2025-09-13 17:50:03
7	Nahian Rahman	647	Python 3	2025-09-12 20:05:39
8	Jimmy Ou Yang	664	Python 3	2024-09-12 02:05:34
9	Muhammad Sohail	664	Python 3	2024-09-17 05:12:33
10	Hidden user	665	Python 3	2025-09-13 21:32:30

#	User	Length	Language	Date
1	Logan Labossiere	1024	Python 3 with NumPy	2023-09-16 01:05:28
2	Hidden user	1097	Python 3 with NumPy	2024-09-17 03:18:32
3	Yutong Liu	1149	Python 3 with NumPy	2025-09-18 00:23:17
4	Qi Zeng	1208	Python 3 with NumPy	2025-09-18 21:07:37
5	Ethan Church	1351	Python 3 with NumPy	2025-09-18 18:42:28
6	Hidden user	1474	Python 3 with NumPy	2025-09-19 03:55:23

#	User	Length	Language	Date
1	Louis Bouchard	2435	Rust	2024-09-18 05:00:00
2	Sindbad Walter	3023	Rust	2023-09-15 15:17:24

Solution running time distribution