Problem A
Piano Lessons — Problem Statistics

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Submissions	423
Accepted submissions	179
Submission ratio	42.32%
Authors	132
Full solves [?]	130
Full solve Ratio	98.48%

#	User	Runtime	Language	Date
1	Ahmed Siadomar	0.05 s	C++	2023-11-20 16:53:09
2	Jerry Xu	0.05 s	C++	2023-11-22 00:41:16
3	RUI GUO	0.05 s	C++	2023-12-09 02:49:45
4	Vedant Vyas	0.06 s	C++	2023-12-02 09:29:07
5	Danila Seliayeu	0.09 s	C++	2023-12-08 04:10:01
6	Yuting He	0.12 s	C++	2022-12-05 04:45:49
7	Matthew Shocrylas	0.12 s	C++	2022-12-06 02:36:32
8	Zac Friggstad	0.12 s	C++	2022-12-12 20:00:44
9	Raghav Chandak	0.12 s	C++	2022-12-12 23:33:14
10	Musa Abdullahi	0.12 s	C++	2023-11-25 23:04:52

#	User	Runtime	Language	Date
1	Cole Dewis	0.10 s	Python 3	2023-11-17 17:47:27
2	Carlin Boyles	0.10 s	Python 3	2023-11-22 05:38:19
3	Hidden user	0.10 s	Python 3	2023-12-08 08:09:03
4	Hamidat	0.10 s	Python 3	2025-11-27 16:20:15
5	Hidden user	0.10 s	Python 3	00:56:09
6	Hidden user	0.11 s	Python 3	2022-11-30 03:23:22
7	Ahmad Amali	0.11 s	Python 3	2022-12-04 22:40:06
8	Sankalp Saini	0.11 s	Python 3	2023-12-02 23:27:07
9	Marcus Gerrard	0.11 s	Python 3	2023-12-03 02:47:02
10	Ashwin Shreekumar	0.12 s	Python 3	2023-11-16 03:16:54

#	User	Runtime	Language	Date
1	Silin Song	0.69 s	Python 3 with NumPy	2025-11-22 20:48:26

#	User	Runtime	Language	Date
1	Logan Travis	0.32 s	Rust	2025-11-24 04:29:36

#	User	Length	Language	Date
1	Jayden Cho	807	C++	2022-12-03 01:42:34
2	YUXUAN FU	867	C++	2023-12-05 00:01:52
3	Kevin Wu	1123	C++	2022-12-04 13:23:34
4	Tran Phuong Anh Nguyen	1247	C++	2023-12-08 21:55:05
5	Bennett Wiredu	1275	C++	2022-12-08 03:23:29
6	Raghav Chandak	1391	C++	2022-12-09 03:26:36
7	Sashreek Magan	1393	C++	2023-12-05 06:12:50
8	qilong li	1400	C++	2022-11-22 05:49:21
9	Alex Mak	1695	C++	2022-11-30 19:49:06
10	Loyaljot Singh Bajwa	1771	C++	2022-12-05 22:46:00

#	User	Length	Language	Date
1	Wenhao You	867	Python 3	2023-11-19 05:11:11
2	David Onchuru	1123	Python 3	2023-12-01 07:50:02
3	Karl Zhong	1255	Python 3	2023-12-03 02:13:02
4	Felix Wang	1327	Python 3	2023-12-08 09:47:22
5	Aryan Kalwani	1332	Python 3	2022-12-03 23:16:56
6	Hidden user	1414	Python 3	00:56:09
7	Jakob Fedun	1416	Python 3	2025-11-20 05:08:55
8	Yuxing Chen	1419	Python 3	2023-11-29 00:07:34
9	Charles Perez	1451	Python 3	2023-11-10 09:56:15
10	Hidden user	1473	Python 3	2025-11-25 00:07:35

#	User	Length	Language	Date
1	Silin Song	2807	Python 3 with NumPy	2025-11-22 20:48:26

#	User	Length	Language	Date
1	Logan Travis	6719	Rust	2025-11-24 04:29:36

Solution running time distribution