Problem A
GREAT + SWERC = PORTO — Problem Statistics

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Submissions	887
Accepted submissions	405
Submission ratio	45.66%
Authors	341
Accepted authors	286
Author ratio	83.87%

#	User	Runtime	Language	Date
1	Sabit Zahin	0.00 s	C	2016-04-26 13:33:24
2	Ivan Petrov	0.00 s	C	2019-05-29 09:20:51
3	Hidden user	0.14 s	C	2020-07-17 16:31:54
4	Fan Jiang	0.25 s	C	2017-11-12 22:35:52
5	Almanach	0.45 s	C	2019-10-29 11:36:03

#	User	Runtime	Language	Date
1	Dỗn Lùng	0.59 s	C#	2019-11-30 11:54:31

#	User	Runtime	Language	Date
1	Simon Marechal	0.06 s	Haskell	2016-10-26 17:19:10

#	User	Runtime	Language	Date
1	Taras Romanyuk	0.04 s	Java	2024-11-27 00:52:30
2	Hà Minh Ngọc	0.06 s	Java	2016-08-11 07:27:02
3	Martijn Muijsers	0.06 s	Java	2016-10-29 14:04:04
4	Mehdi Maick	0.07 s	Java	2016-08-10 20:41:16
5	Trần Công Duy	0.07 s	Java	2016-08-11 16:43:50
6	Mouhssine Assaoud	0.08 s	Java	2016-10-21 11:56:13
7	Jonathan Hartnett	0.08 s	Java	2017-11-02 01:01:56
8	Bjørn Dons	0.09 s	Java	2019-12-03 21:34:42
9	Brent Yorgey	0.13 s	Java	2020-01-01 20:34:36
10	Hidden user	0.15 s	Java	2018-03-14 19:04:44

#	User	Runtime	Language	Date
1	Ali Amid	0.94 s	Kotlin	2024-08-18 13:45:57

#	User	Runtime	Language	Date
1	Andreas Björklund	0.12 s	Python 2	2022-02-13 15:41:44
2	Hidden user	0.65 s	Python 2	2019-11-28 22:10:23
3	Kevin Tang	0.96 s	Python 2	2019-09-26 23:18:41

#	User	Runtime	Language	Date
1	Michele Baldo	0.05 s	Python 3	2019-05-20 20:31:03
2	Emil Rapp	0.09 s	Python 3	2025-06-16 11:23:27
3	Duoduo Zhao	0.10 s	Python 3	2025-08-13 10:46:39
4	Enrique Javier Cobo Jimenez	0.11 s	Python 3	2024-07-16 20:52:22
5	Nils Wikström	0.11 s	Python 3	2025-07-29 16:36:00
6	Hidden user	0.14 s	Python 3	2024-07-25 21:37:12
7	Anna Kerstin Maria Glimmerfors	0.14 s	Python 3	2024-07-25 21:39:55
8	Denil Bouafia	0.15 s	Python 3	2024-12-18 16:23:50
9	Nicholas Russell Saerang	0.17 s	Python 3	2022-11-25 21:42:40
10	John Lamb	0.23 s	Python 3	2025-07-12 19:37:58

#	User	Runtime	Language	Date
1	Buster Hultgren Wärn	0.04 s	Rust	2024-08-01 19:44:25

#	User	Length	Language	Date
1	Fan Jiang	1163	C	2017-11-12 22:35:52
2	Sabit Zahin	2430	C	2016-04-26 13:33:24
3	Almanach	2558	C	2019-10-29 11:37:11
4	Hidden user	2594	C	2020-07-17 16:31:54
5	Ivan Petrov	3806	C	2019-05-29 09:20:51

#	User	Length	Language	Date
1	Dỗn Lùng	3276	C#	2019-11-30 11:54:31

#	User	Length	Language	Date
1	Elias Lolck	629	C++	2023-08-16 19:03:40
2	Ale Mini	740	C++	2022-12-03 11:33:52
3	Chenghao Wang	875	C++	2023-02-20 06:20:12
4	Daria Pasqualetti	892	C++	2021-12-05 16:43:56
5	Dewita Sonya Tarabunga	944	C++	2019-11-24 08:53:57
6	Ventus Liberum	1036	C++	2022-08-24 17:18:06
7	王嘉仪	1055	C++	2020-01-04 12:06:45
8	Meysam Aghighi	1067	C++	2017-12-12 21:59:15
9	Alec Le Helloco	1089	C++	2024-09-01 12:05:19
10	Sean Purcell	1097	C++	2015-10-25 18:21:34

#	User	Length	Language	Date
1	Simon Marechal	3909	Haskell	2016-10-26 17:19:10

#	User	Length	Language	Date
1	Hà Minh Ngọc	1838	Java	2016-08-11 06:13:09
2	Doug Goodman	1920	Java	2017-12-14 16:04:55
3	Savvas Giortsis	2144	Java	2024-07-13 16:30:02
4	Graeme Zinck	2350	Java	2018-10-26 01:58:05
5	Jonathan Hartnett	2451	Java	2017-11-02 01:01:56
6	Jon Cavallie Mester	2463	Java	2024-06-10 22:57:59
7	Ryan Glaspey	2487	Java	2021-01-02 21:06:36
8	Andrew Polizzotto	2494	Java	2020-05-02 12:59:20
9	Crystal Sharpe	2574	Java	2020-04-28 05:27:05
10	Micah Stairs	2695	Java	2016-09-04 01:02:05

#	User	Length	Language	Date
1	Ali Amid	1805	Kotlin	2024-08-18 13:45:57

#	User	Length	Language	Date
1	Hidden user	722	Python 2	2019-11-28 22:05:50
2	Kevin Tang	1031	Python 2	2019-09-26 23:35:22
3	Andreas Björklund	1406	Python 2	2022-02-13 15:41:44

#	User	Length	Language	Date
1	Jason Oliphant	688	Python 3	2025-02-13 02:38:24
2	Tai Tze Kin	850	Python 3	2025-01-28 14:21:55
3	Denil Bouafia	940	Python 3	2024-12-18 16:23:50
4	Enrique Javier Cobo Jimenez	1193	Python 3	2024-07-17 20:39:06
5	Robel Yonas Tesfaye Bekele	1244	Python 3	2025-07-06 01:13:15
6	Kian Kasad	1362	Python 3	2025-01-30 04:14:33
7	bhavin	1598	Python 3	2025-01-31 04:41:28
8	Jimmy Dinh	1701	Python 3	2025-01-31 04:32:02
9	John Lamb	1808	Python 3	2025-07-12 19:37:58
10	Nils Wikström	2106	Python 3	2025-07-29 16:36:00

#	User	Length	Language	Date
1	Buster Hultgren Wärn	4940	Rust	2024-08-01 19:44:25

Solution running time distribution