Problem A
Familiar Digit — Problem Statistics

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Submissions	339
Accepted submissions	88
Submission ratio	25.96%
Authors	89
Full solves [?]	65
Full solve Ratio	73.03%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.03 s	C	2020-01-14 14:13:49

#	User	Runtime	Language	Date
1	Alexander Skidanov	0.02 s	C++	2025-09-17 23:11:22
2	Viet An Pham	0.03 s	C++	2017-11-05 05:05:46
3	Ranald Lam	0.04 s	C++	2017-11-05 04:59:47
4	William Gan	0.04 s	C++	2017-11-05 07:58:47
5	Wiwit Rifa'i	0.04 s	C++	2017-11-05 18:53:08
6	Nguyen Cao Duy	0.04 s	C++	2022-12-10 09:15:10
7	Ba Thai Pham	0.06 s	C++	2017-11-05 16:22:19
8	Ivan	0.06 s	C++	2025-07-18 13:36:47
9	Phạm Thắng	0.07 s	C++	2017-11-05 06:04:36
10	karrigan	0.07 s	C++	2023-02-21 18:03:49

#	User	Runtime	Language	Date
1	Dilhan Salgado	0.34 s	Python 3	2023-06-11 20:57:10
2	Nicholas Russell Saerang	1.50 s	Python 3	2025-06-19 08:27:28

#	User	Length	Language	Date
1	Ivan Petrov	3870	C	2020-01-14 14:13:49

#	User	Length	Language	Date
1	Ba Thai Pham	1480	C++	2017-11-05 16:22:19
2	Đức Minh	1920	C++	2019-09-30 04:30:00
3	Văn Hiệp	2139	C++	2023-03-07 18:34:28
4	Shiro	2246	C++	2022-08-02 05:29:59
5	Phúc Nguyễn	2310	C++	2025-08-12 16:46:07
6	Brandon Zhang	2360	C++	2024-02-07 10:39:05
7	Tuấn Phong Cao	2451	C++	2025-08-12 12:52:51
8	Dương Đào	2468	C++	2022-11-14 16:44:33
9	Anh Duc Le	2495	C++	2017-11-07 04:50:12
10	Hidden user	2502	C++	2017-11-05 06:58:11

#	User	Length	Language	Date
1	Nicholas Russell Saerang	1282	Python 3	2025-06-19 16:30:35
2	Dilhan Salgado	2482	Python 3	2023-06-11 20:57:10

Solution running time distribution