Problem A
Table — Problem Statistics

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Submissions	202
Accepted submissions	71
Submission ratio	35.15%
Authors	63
Full solves [?]	46
Full solve Ratio	73.02%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.09 s	C	2019-03-19 14:33:27

#	User	Runtime	Language	Date
1	Guillermo Sanchez	0.06 s	C++	2018-08-24 01:06:27
2	Brandon Zhang	0.06 s	C++	2023-03-13 07:13:43
3	Willson Wijaya	0.08 s	C++	2020-05-24 17:00:20
4	Nguyen Xuan Tung	0.08 s	C++	2021-06-26 10:50:57
5	Nguyen Qui Vinh Quang	0.08 s	C++	2021-08-25 10:28:17
6	Glenn Say	0.10 s	C++	2025-05-06 19:14:00
7	Josenildo Silva	0.11 s	C++	2018-08-14 18:27:15
8	Pang Jia Hao	0.11 s	C++	2023-04-16 17:13:14
9	Thomas Meeks	0.11 s	C++	2025-01-29 20:19:04
10	pinog	0.11 s	C++	2025-07-13 16:31:41

#	User	Runtime	Language	Date
1	Doug Goodman	1.27 s	Java	2022-11-20 15:20:03

#	User	Runtime	Language	Date
1	Lingyu Song	0.53 s	Python 2	2018-11-05 13:40:02
2	Andreas Björklund	3.40 s	Python 2	2018-12-31 12:16:37

#	User	Runtime	Language	Date
1	Duoduo Zhao	2.07 s	Python 3	2025-09-12 16:27:41

#	User	Length	Language	Date
1	Ivan Petrov	1232	C	2019-03-19 14:33:27

#	User	Length	Language	Date
1	Guan Han Li	1002	C++	2024-02-02 23:43:33
2	She Jiayu	1066	C++	2020-03-22 21:32:56
3	Josenildo Silva	1133	C++	2018-08-14 18:27:15
4	pinog	1136	C++	2025-07-11 11:48:36
5	Nguyen Xuan Tung	1201	C++	2021-06-26 10:50:57
6	Farbod Yadegarian	1214	C++	2018-02-17 23:54:04
7	Mattia Corrà	1285	C++	2022-03-27 17:32:28
8	Minh Nguyen	1347	C++	2018-11-21 08:57:25
9	Nguyen Qui Vinh Quang	1404	C++	2021-08-25 10:28:17
10	Paul Wild	1415	C++	2019-06-04 16:08:55

#	User	Length	Language	Date
1	Doug Goodman	4092	Java	2022-11-20 15:20:03

#	User	Length	Language	Date
1	Lingyu Song	1176	Python 2	2018-11-05 13:40:02
2	Andreas Björklund	1516	Python 2	2018-12-31 12:16:37

#	User	Length	Language	Date
1	Duoduo Zhao	3873	Python 3	2025-09-12 16:27:41

Solution running time distribution