Problem A
Careful Declaration — Problem Statistics

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Submissions	399
Accepted submissions	110
Submission ratio	27.57%
Authors	89
Full solves [?]	62
Full solve Ratio	69.66%

#	User	Runtime	Language	Date
1	Henry Jayakusuma	0.55 s	C	2019-04-03 17:46:06
2	Ivan Petrov	0.58 s	C	2019-09-02 16:04:13

#	User	Runtime	Language	Date
1	Håkan Terelius	0.28 s	C++	2010-10-11 21:24:33
2	William Gan	0.32 s	C++	2016-03-24 11:19:36
3	David Wärn	0.35 s	C++	2015-10-06 19:14:37
4	Andy Huang	0.46 s	C++	2016-04-01 03:41:44
5	Simone Moretti	0.47 s	C++	2021-11-29 19:00:15
6	Vijayaraghavan Vishnuprasath	0.59 s	C++	2023-07-05 15:40:31
7	Brandon Zhang	0.59 s	C++	2023-12-04 08:50:47
8	Mohsen Dehbashi	0.61 s	C++	2020-12-21 11:27:19
9	Goh Siau Chiak	0.62 s	C++	2023-02-12 10:35:56
10	Simon Lindholm	0.64 s	C++	2015-09-25 13:35:09

#	User	Runtime	Language	Date
1	Juan Miguel Vilar	4.16 s	Haskell	2021-01-05 20:05:12

#	User	Runtime	Language	Date
1	Martin Maňák	1.44 s	Java	2016-04-21 13:17:37
2	Johan Sannemo	1.50 s	Java	2015-10-07 16:45:04
3	Hidden user	1.92 s	Java	2020-06-20 21:19:28
4	Josenildo Silva	2.39 s	Java	2018-06-26 14:56:42
5	Hidden user	4.26 s	Java	2019-11-24 21:51:10

#	User	Runtime	Language	Date
1	Nicholas Russell Saerang	3.99 s	Python 3	2025-06-12 23:26:03

#	User	Runtime	Language	Date
1	Daniel Anker Hermansen	1.09 s	Rust	2024-05-19 14:33:03

#	User	Length	Language	Date
1	Henry Jayakusuma	2346	C	2019-04-03 17:46:06
2	Ivan Petrov	2373	C	2019-09-02 16:04:13

#	User	Length	Language	Date
1	Nathaniel Ang	1087	C++	2020-03-22 06:42:18
2	Yeung Man Tsung	1127	C++	2023-02-06 15:59:21
3	David Wärn	1390	C++	2015-10-06 19:14:37
4	Simon Lindholm	1444	C++	2015-09-25 13:35:09
5	Brandon Zhang	1450	C++	2023-12-04 08:47:43
6	Jonas Sjöstrand	1512	C++	2015-10-28 23:06:55
7	Simone Moretti	1582	C++	2021-11-29 19:00:15
8	Tấn Phát Trần	1585	C++	2019-04-05 08:01:27
9	Markus Mathiasen	1585	C++	2023-10-18 13:35:58
10	Way Tan	1615	C++	2019-04-03 16:03:20

#	User	Length	Language	Date
1	Juan Miguel Vilar	5138	Haskell	2021-01-05 20:05:12

#	User	Length	Language	Date
1	Josenildo Silva	1598	Java	2018-06-26 14:56:42
2	Johan Sannemo	1699	Java	2015-10-07 16:44:06
3	Hidden user	3319	Java	2019-11-24 21:51:10
4	Martin Maňák	3394	Java	2016-04-21 13:17:37
5	Hidden user	5012	Java	2020-06-20 21:19:28

#	User	Length	Language	Date
1	Nicholas Russell Saerang	878	Python 3	2025-06-12 23:26:03

#	User	Length	Language	Date
1	Daniel Anker Hermansen	29446	Rust	2024-05-19 14:33:03

Solution running time distribution