Problem A
Orphan Backups — Problem Statistics

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Submissions	1240
Accepted submissions	248
Submission ratio	20.00%
Authors	233
Full solves [?]	166
Full solve Ratio	71.24%

#	User	Runtime	Language	Date
1	Lyubomir Savekov	0.11 s	C++	2022-11-22 21:39:12
2	Jeremy Lim	0.11 s	C++	2023-12-23 12:43:14
3	Khang Phu Hong Can Pham	0.11 s	C++	2024-01-14 12:01:11
4	Oliver Howe	0.11 s	C++	2024-11-10 20:52:06
5	Alexander Skidanov	0.11 s	C++	2025-10-22 16:25:39
6	Henry Xia	0.12 s	C++	2019-10-18 08:45:31
7	Tomas Lagland	0.12 s	C++	2020-10-18 22:30:33
8	Hidden user	0.12 s	C++	2020-12-25 12:57:41
9	Omar Ali	0.12 s	C++	2025-10-22 16:24:07
10	Drake Cullen	0.13 s	C++	2022-04-25 02:42:48

#	User	Runtime	Language	Date
1	Norbert Voelker	0.09 s	Go	2024-08-10 21:55:47

#	User	Runtime	Language	Date
1	Sam Reinehr	0.47 s	Java	2018-12-06 19:03:21
2	Bruno Volpato	0.50 s	Java	2020-11-16 23:58:40
3	Doug Goodman	0.52 s	Java	2019-07-25 17:21:34
4	Umair Ahmad	0.54 s	Java	2022-01-26 23:49:47
5	Drake Cullen	0.54 s	Java	2022-04-25 02:28:34
6	Andrew Polizzotto	0.56 s	Java	2020-09-03 16:07:19
7	Hidden user	0.58 s	Java	2020-05-05 18:16:40
8	Dominic Reed	0.59 s	Java	2020-10-07 00:55:20
9	Victor Song	0.59 s	Java	2023-10-20 23:46:34
10	Ali Pervaiz	0.60 s	Java	2019-08-16 17:15:52

#	User	Runtime	Language	Date
1	Justin Lambert	0.80 s	JavaScript (Node.js)	2021-03-30 20:26:39

#	User	Runtime	Language	Date
1	Timothy Gaede	0.64 s	Julia	2025-09-16 04:23:43

#	User	Runtime	Language	Date
1	Wang Zhi Jian	0.16 s	Python 2	2019-05-10 07:14:16
2	Godmar Back	0.22 s	Python 2	2018-11-11 23:26:27
3	Johann Ly	0.25 s	Python 2	2018-11-25 09:31:31
4	Aarav Singh	0.43 s	Python 2	2021-10-16 20:12:24

#	User	Runtime	Language	Date
1	Petr	0.14 s	Python 3	2025-08-08 22:01:15
2	Ram Basnet	0.22 s	Python 3	2023-03-05 00:20:15
3	Vyas Narasimhan	0.22 s	Python 3	2023-09-21 06:31:40
4	Daniel Stein	0.22 s	Python 3	2024-11-11 19:33:32
5	Jerry Xu	0.24 s	Python 3	2024-06-19 01:15:55
6	Ethan Pang	0.27 s	Python 3	2024-11-08 02:23:30
7	Tan Kerway	0.27 s	Python 3	2025-02-26 09:26:49
8	嘉雯 江	0.27 s	Python 3	2025-07-19 12:16:30
9	Hrant Hovhannisyan	0.27 s	Python 3	2025-12-23 09:11:00
10	crapcode	0.28 s	Python 3	2022-05-20 01:03:21

#	User	Runtime	Language	Date
1	Artur Khuziakhmetov	0.10 s	Rust	2025-03-05 14:58:39
2	Pahlevi Fikri Auliya	0.25 s	Rust	2020-11-06 23:09:11

#	User	Length	Language	Date
1	Jeremy Lim	738	C++	2023-12-23 12:58:07
2	Rui Hou	798	C++	2019-11-08 15:19:26
3	Hyunjun Lee	802	C++	2022-11-12 01:14:29
4	Lim An Jun	804	C++	2023-03-15 12:16:31
5	Toh Xuan Ning Jeanne	814	C++	2022-01-18 17:31:32
6	Howard Cheng	818	C++	2019-10-20 20:25:46
7	Hidden user	835	C++	2024-12-30 15:48:01
8	Markus Mathiasen	874	C++	2021-10-19 12:47:31
9	Alexander Skidanov	885	C++	2025-10-22 17:19:40
10	Marc Phua	913	C++	2020-08-07 09:46:19

#	User	Length	Language	Date
1	Norbert Voelker	1246	Go	2024-08-10 21:55:47

#	User	Length	Language	Date
1	Steve Tate	923	Java	2018-12-16 21:03:26
2	Sam Reinehr	985	Java	2018-12-06 19:03:21
3	Dominic Reed	1307	Java	2020-10-07 00:48:53
4	Ben Reed	1357	Java	2020-10-07 00:44:12
5	Daniel Hartenstine	1384	Java	2018-11-20 18:28:07
6	Victor Song	1392	Java	2023-10-20 23:46:34
7	Ben Blodgett	1404	Java	2024-08-31 18:59:03
8	Kevin Kauffman	1411	Java	2021-10-19 04:37:34
9	Doug Goodman	1419	Java	2019-07-25 17:21:34
10	Ali Pervaiz	1430	Java	2019-08-16 17:15:52

#	User	Length	Language	Date
1	Justin Lambert	1181	JavaScript (Node.js)	2021-03-30 19:12:28

#	User	Length	Language	Date
1	Timothy Gaede	1038	Julia	2025-09-16 04:23:43

#	User	Length	Language	Date
1	Wang Zhi Jian	543	Python 2	2019-05-10 07:14:16
2	Godmar Back	614	Python 2	2018-11-11 23:26:27
3	Aarav Singh	697	Python 2	2021-10-16 20:12:24
4	Johann Ly	866	Python 2	2018-11-25 09:31:31

#	User	Length	Language	Date
1	Artur Khuziakhmetov	380	Python 3	2025-03-05 10:31:13
2	Nicholas Russell Saerang	402	Python 3	2024-01-17 16:15:17
3	Vu Minh Hieu	402	Python 3	2024-10-21 17:28:53
4	Ethan Pang	402	Python 3	2024-11-08 02:23:30
5	Tan Kerway	402	Python 3	2025-02-26 09:26:49
6	嘉雯 江	402	Python 3	2025-07-19 12:16:30
7	Teikn Smith	411	Python 3	2024-08-31 18:50:34
8	Oskar Haarklou Veileborg	461	Python 3	2020-02-17 10:57:39
9	Iman Khodadi	476	Python 3	2025-05-26 20:24:56
10	Tan Yi Long	490	Python 3	2023-12-27 20:21:20

#	User	Length	Language	Date
1	Artur Khuziakhmetov	870	Rust	2025-03-05 14:29:18
2	Pahlevi Fikri Auliya	3020	Rust	2020-11-06 23:09:11

Solution running time distribution