Problem A
Substitution Mania! — Problem Statistics

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Submissions	209
Accepted submissions	40
Submission ratio	19.14%
Authors	37
Accepted authors	16
Author ratio	43.24%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.72 s	C	2019-11-01 10:59:32
2	Bergur Snorrason	0.99 s	C	2019-09-20 16:20:21

#	User	Runtime	Language	Date
1	Dmitry Lyubshin	0.28 s	C++	2019-06-29 22:47:56
2	Yosuke Mizutani	0.38 s	C++	2020-08-22 06:32:16
3	Jeremy Lim	0.42 s	C++	2025-05-12 16:46:13
4	Lawry Sorenson	0.45 s	C++	2024-07-23 21:43:10
5	Alexander Skidanov	0.57 s	C++	2025-06-09 19:29:12
6	Henry Xia	0.78 s	C++	2019-10-10 07:11:55
7	Atli Fannar Franklín	0.89 s	C++	2019-09-18 19:04:47
8	Teikn Smith	0.94 s	C++	2024-08-31 17:39:45
9	Godmar Back	1.48 s	C++	2019-10-07 04:29:21
10	Hidden user	1.52 s	C++	2020-10-29 15:20:18

#	User	Runtime	Language	Date
1	Aarav Singh	1.21 s	Java	2019-06-22 09:35:47

#	User	Runtime	Language	Date
1	Aarav Singh	2.25 s	Python 2	2019-06-22 09:41:01
2	Isaac Lee	2.62 s	Python 2	2019-06-13 21:53:18

#	User	Runtime	Language	Date
1	Shorya M	3.59 s	Python 3	2021-09-26 01:28:55

#	User	Length	Language	Date
1	Ivan Petrov	3041	C	2019-11-01 10:59:32
2	Bergur Snorrason	5303	C	2019-09-20 16:20:21

#	User	Length	Language	Date
1	Lawry Sorenson	1015	C++	2024-07-23 22:04:57
2	Teikn Smith	1680	C++	2024-08-31 18:15:56
3	Yosuke Mizutani	2380	C++	2020-08-22 06:32:16
4	Henry Xia	2423	C++	2019-10-10 07:11:55
5	Dmitry Lyubshin	2588	C++	2019-06-29 22:47:56
6	Jeremy Lim	3067	C++	2025-05-12 16:46:13
7	Mohsen Dehbashi	3193	C++	2020-06-19 22:30:37
8	Atli Fannar Franklín	3764	C++	2019-09-18 19:04:47
9	Hidden user	3773	C++	2020-10-29 15:20:18
10	Alexander Skidanov	3844	C++	2025-06-09 19:29:12

#	User	Length	Language	Date
1	Aarav Singh	4833	Java	2019-06-22 09:35:47

#	User	Length	Language	Date
1	Aarav Singh	1995	Python 2	2019-06-22 09:41:01
2	Isaac Lee	3323	Python 2	2019-06-13 21:53:18

#	User	Length	Language	Date
1	Shorya M	5366	Python 3	2021-09-26 01:28:55

Solution running time distribution