Problem A
Black Friday — Problem Statistics

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Submissions	596
Accepted submissions	133
Submission ratio	22.32%
Authors	118
Full solves [?]	114
Full solve Ratio	96.61%

#	User	Runtime	Language	Date
1	Kevin Seminario	0.01 s	C++ with Memory Check	2025-10-12 03:04:13
2	Taylor Neely	0.01 s	C++ with Memory Check	2025-10-20 03:19:15

#	User	Runtime	Language	Date
1	Raza Retiwala	0.02 s	Python 3	2017-01-21 06:05:30
2	Christine Dominic	0.04 s	Python 3	2025-09-11 19:31:36
3	Yu Lim	0.04 s	Python 3	2025-09-11 19:41:26
4	Sehej Kumar	0.04 s	Python 3	2025-09-11 20:01:04
5	Aryan Aneesh	0.04 s	Python 3	2025-09-11 21:00:22
6	Noga Rosenberg	0.04 s	Python 3	2025-09-11 21:36:12
7	Carson Davis	0.04 s	Python 3	2025-09-11 21:36:34
8	Bethany Aung	0.04 s	Python 3	2025-09-11 23:56:34
9	Andy Nguyen	0.04 s	Python 3	2025-09-12 00:32:44
10	Nathan Tran	0.04 s	Python 3	2025-09-12 02:29:24

#	User	Length	Language	Date
1	Kevin Seminario	642	C++ with Memory Check	2025-10-12 03:04:13
2	Taylor Neely	745	C++ with Memory Check	2025-10-20 03:19:15

#	User	Length	Language	Date
1	Jonathan Ho	252	Python 3	2025-09-14 06:37:25
2	Dominic Paruolo	272	Python 3	2025-09-12 21:14:11
3	Danyal Saeed	287	Python 3	2025-09-14 18:32:09
4	Justin Wong	288	Python 3	2025-09-15 02:51:56
5	Fabian Medina	288	Python 3	2025-09-15 04:43:13
6	Tu Le	299	Python 3	2025-09-17 07:04:18
7	Angel Enriquez	320	Python 3	2025-09-12 16:24:52
8	Jaewoo Shim	323	Python 3	2025-09-12 22:59:28
9	Angel Ogungbemi	323	Python 3	2025-09-16 05:07:47
10	Pranav Tonpe	331	Python 3	2025-09-16 00:26:45

Solution running time distribution