Problem A
Firefly — Problem Statistics

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Submissions	135
Accepted submissions	63
Submission ratio	46.67%
Authors	42
Accepted authors	34
Author ratio	80.95%

#	User	Runtime	Language	Date
1	Fredrik Baldhagen	0.08 s	C#	2024-10-06 01:38:38

#	User	Runtime	Language	Date
1	Fredrik Präntare	0.02 s	C++	2017-02-09 14:27:54
2	Sebastian Gustavsson	0.02 s	C++	2019-02-14 13:59:23
3	Henrik Sahlin	0.02 s	C++	2025-04-06 13:30:07
4	Hidden user	0.03 s	C++	2017-02-09 13:41:12
5	Robert Kumpulainen	0.03 s	C++	2017-11-29 16:46:17
6	Mattias Evaldsson	0.03 s	C++	2019-02-14 14:22:28
7	Teodor Riddarhaage	0.03 s	C++	2019-02-14 15:15:56
8	Gustav Gränsbo	0.04 s	C++	2017-02-09 15:14:04
9	Filip Magnusson	0.04 s	C++	2017-02-09 15:37:22
10	Clas Veibäck	0.04 s	C++	2017-02-09 16:19:59

#	User	Runtime	Language	Date
1	Olav Övrebö	0.28 s	Java	2019-02-14 14:02:59
2	Ludvig Westerdahl	0.31 s	Java	2019-02-14 14:55:38
3	Björn Detterfelt	0.36 s	Java	2019-02-14 15:24:17

#	User	Runtime	Language	Date
1	Jiaxun Wei	0.43 s	JavaScript (Node.js)	2024-12-03 04:25:45

#	User	Runtime	Language	Date
1	Silas Lenz	0.61 s	Kotlin	2019-02-14 15:15:38

#	User	Runtime	Language	Date
1	Calle Andersson	0.17 s	Python 3	2024-10-27 12:33:12
2	Marcus Ruderer	0.39 s	Python 3	2025-03-05 16:23:47

#	User	Runtime	Language	Date
1	Hidden user	0.30 s	Python 3 with NumPy	2025-04-02 13:00:14

#	User	Length	Language	Date
1	Fredrik Baldhagen	1471	C#	2024-10-06 01:38:38

#	User	Length	Language	Date
1	Lenny Johansson	890	C++	2018-02-08 11:58:37
2	Anton Gefvert	1194	C++	2019-02-14 15:30:00
3	Hidden user	1264	C++	2017-02-09 13:41:12
4	Mattias Evaldsson	1279	C++	2019-02-14 14:22:28
5	Robert Kumpulainen	1301	C++	2017-09-11 15:23:54
6	Tomas Öhberg	1342	C++	2017-02-09 14:33:35
7	Sergio Francisco Acosta Lenis	1395	C++	2025-03-01 18:46:17
8	Sebastian Gustavsson	1440	C++	2019-02-14 13:59:23
9	Filip Magnusson	1591	C++	2017-02-09 15:37:22
10	Gauvain Robert	1640	C++	2019-02-14 16:23:09

#	User	Length	Language	Date
1	Olav Övrebö	2550	Java	2019-02-14 14:02:59
2	Björn Detterfelt	2976	Java	2019-02-14 15:24:17
3	Ludvig Westerdahl	5208	Java	2019-02-14 14:55:38

#	User	Length	Language	Date
1	Jiaxun Wei	1398	JavaScript (Node.js)	2024-12-03 04:25:45

#	User	Length	Language	Date
1	Silas Lenz	3299	Kotlin	2019-02-14 15:15:38

#	User	Length	Language	Date
1	Calle Andersson	1065	Python 3	2024-10-27 12:33:12
2	Marcus Ruderer	1425	Python 3	2025-03-05 16:23:47

#	User	Length	Language	Date
1	Hidden user	1004	Python 3 with NumPy	2025-04-02 13:00:14

Solution running time distribution