Problem I
Classical Counting — Problem Statistics

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Submissions	804
Accepted submissions	172
Submission ratio	21.39%
Authors	183
Full solves [?]	109
Full solve Ratio	59.56%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.01 s	C	2020-02-07 10:48:35

#	User	Runtime	Language	Date
1	Alan Ontiveros	0.00 s	C++	2021-05-20 06:30:55
2	Cameron Custer	0.00 s	C++	2022-07-24 07:58:18
3	Jeremy Lim	0.00 s	C++	2024-02-20 08:19:39
4	Kevin Luvian	0.01 s	C++	2018-09-15 06:29:44
5	Vu Hoang Kien	0.01 s	C++	2018-09-15 06:54:52
6	Dau Duy Khanh	0.01 s	C++	2018-09-15 07:07:39
7	Nguyen Xuan Tung	0.01 s	C++	2018-09-15 17:28:32
8	Timothy Kurniawan	0.01 s	C++	2018-09-16 09:17:44
9	Bohao Sun	0.01 s	C++	2018-09-18 05:19:58
10	Antonio Molina Lovett	0.01 s	C++	2018-09-18 20:39:44

#	User	Runtime	Language	Date
1	Steven Halim	0.21 s	Java	2018-09-11 07:58:08

#	User	Runtime	Language	Date
1	Andreas Björklund	0.13 s	Python 2	2019-03-05 16:02:18

#	User	Runtime	Language	Date
1	Duoduo Zhao	0.10 s	Python 3	2025-08-29 16:10:23
2	Zac Friggstad	0.11 s	Python 3	2022-02-16 16:45:36
3	Hidden user	0.20 s	Python 3	2021-10-31 08:35:19
4	Hidden user	0.29 s	Python 3	2023-08-11 21:08:54
5	Thomas Feld	0.30 s	Python 3	2023-11-02 10:06:45

#	User	Runtime	Language	Date
1	Thomas Feld	0.15 s	Ruby	2023-11-02 10:24:15

#	User	Length	Language	Date
1	Ivan Petrov	1117	C	2020-02-07 10:48:35

#	User	Length	Language	Date
1	Ivan Petrov	963	C++	2020-02-07 10:45:48
2	Johan Wind	1007	C++	2018-10-11 01:24:24
3	noneTP	1013	C++	2018-09-17 00:13:32
4	Jaehyun Koo	1201	C++	2018-09-15 05:08:00
5	William Gan	1342	C++	2018-09-15 05:28:24
6	Gergely Dániel Péter	1342	C++	2025-08-06 18:48:54
7	Tan-Phat Tran	1352	C++	2018-09-15 05:18:16
8	Tấn Phát Trần	1354	C++	2019-02-06 18:40:33
9	Alan Ontiveros	1377	C++	2021-05-20 06:30:55
10	Đặng Bảo Chiến	1459	C++	2018-09-15 09:59:23

#	User	Length	Language	Date
1	Steven Halim	2240	Java	2018-09-11 07:58:08

#	User	Length	Language	Date
1	Andreas Björklund	1949	Python 2	2019-03-05 16:02:18

#	User	Length	Language	Date
1	Zac Friggstad	557	Python 3	2022-02-16 20:05:50
2	Thomas Feld	1163	Python 3	2023-11-02 10:06:45
3	Hidden user	1190	Python 3	2023-08-11 21:08:54
4	Hidden user	1798	Python 3	2021-10-31 08:35:19
5	Duoduo Zhao	2464	Python 3	2025-08-29 16:10:23

#	User	Length	Language	Date
1	Thomas Feld	376	Ruby	2023-11-02 12:10:51

Solution running time distribution