Problem M
Light Switches — Problem Statistics

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Submissions	426
Accepted submissions	402
Submission ratio	94.37%
Authors	93
Full solves [?]	38
Full solve Ratio	40.86%

#	User	Score	Language	Date
1	Kasper Kabell	100	C#	2025-02-26 21:44:23
2	Roberto Rodriguez Giorgetti	0	C#	2024-10-02 18:17:45

#	User	Score	Language	Date
1	Logan Pipes	0	COBOL	2022-08-02 03:56:15

#	User	Score	Language	Date
1	Simon Klein	100	Java	2019-01-29 22:15:52
2	Robert Jay Beralde	0	Java	2023-08-25 00:43:21

#	User	Score	Language	Date
1	Bjørn Chr. Soltvedt	0	JavaScript (SpiderMonkey)	2021-01-01 06:00:57

#	User	Score	Language	Date
1	Gunnar Kreitz	0	PHP	2022-09-05 14:02:02

#	User	Score	Language	Date
1	Julia Persson	100	Python 2	2019-01-28 18:19:07

#	User	Score	Language	Date
1	Ole Vik Lysne	100	Python 3	2024-10-24 16:31:18
2	Dilhan Salgado	100	Python 3	2025-11-19 21:42:44
3	Tony Kwan	80	Python 3	2023-02-08 19:18:14
4	Jackson Rolando	13	Python 3	2023-05-04 05:28:49
5	John Westermark	0	Python 3	2019-01-18 15:31:34
6	Julia Persson	0	Python 3	2019-01-18 16:34:46
7	Thomas Mailund	0	Python 3	2020-11-26 14:47:58
8	Lee Isaac	0	Python 3	2021-07-28 19:00:56
9	Hefuhai Ma	0	Python 3	2021-11-07 23:40:26
10	Jinshui Ma	0	Python 3	2021-11-08 21:07:59

#	User	Score	Language	Date
1	Daniel Anker Hermansen	100	Rust	2024-12-12 11:30:56
2	Mathias Magnusson	0	Rust	2019-01-18 12:25:03
3	Bas Dirks	0	Rust	2022-01-16 21:12:58
4	Owen Seary	0	Rust	2023-01-22 21:12:51
5	Mathias Brännström	0	Rust	2025-02-17 21:45:49

#	User	Runtime	Language	Date
1	Kasper Kabell	0.16 s	C#	2025-02-27 21:38:12

#	User	Runtime	Language	Date
1	Jeremy Lim	0.03 s	C++	2026-02-05 18:04:09
2	Carl Westerlund	0.06 s	C++	2019-01-28 14:00:12
3	Malte Dickson	0.06 s	C++	2024-11-09 12:22:11
4	Erik Adebahr	0.07 s	C++	2024-11-15 07:34:17
5	Qianlang Chen	0.08 s	C++	2023-05-27 22:36:20
6	Trade Exchange	0.08 s	C++	2026-02-25 09:01:59
7	Alexander Skidanov	0.08 s	C++	2026-02-25 09:46:02
8	Filip Björnåsen	0.09 s	C++	2019-01-26 20:07:09
9	Hugo Eberhard	0.09 s	C++	2019-01-30 17:13:42
10	Mattias Akke	0.13 s	C++	2019-01-24 14:26:29

#	User	Runtime	Language	Date
1	Simon Klein	0.52 s	Java	2019-01-29 22:15:52

#	User	Runtime	Language	Date
1	Julia Persson	0.23 s	Python 2	2019-01-28 18:19:07

#	User	Runtime	Language	Date
1	Ole Vik Lysne	1.02 s	Python 3	2024-10-24 16:31:18
2	Dilhan Salgado	1.66 s	Python 3	2025-11-19 21:42:44

#	User	Runtime	Language	Date
1	Daniel Anker Hermansen	0.66 s	Rust	2024-12-12 11:30:56

#	User	Length	Language	Date
1	Kasper Kabell	3587	C#	2025-02-26 21:55:34

#	User	Length	Language	Date
1	Seunghyun Joe	1227	C++	2019-01-23 11:59:15
2	Alexander Morozov	1238	C++	2019-03-19 19:25:49
3	Zac Friggstad	1255	C++	2022-09-24 02:00:11
4	Joakim Blikstad	1537	C++	2020-12-08 19:56:32
5	Yuta Takaya	1619	C++	2019-01-26 03:27:58
6	Ron Ryvchin	1701	C++	2023-05-04 19:53:11
7	Zsolt Németh	1740	C++	2025-04-11 01:06:18
8	Qianlang Chen	1749	C++	2023-05-27 22:36:20
9	Gustav Kalander	1798	C++	2019-01-24 14:47:01
10	C3Speedrun2024	1821	C++	2024-12-10 18:55:23

#	User	Length	Language	Date
1	Simon Klein	3408	Java	2019-01-29 22:15:52

#	User	Length	Language	Date
1	Julia Persson	2926	Python 2	2019-01-28 18:19:07

#	User	Length	Language	Date
1	Ole Vik Lysne	1188	Python 3	2024-10-24 16:51:03
2	Dilhan Salgado	2396	Python 3	2025-11-19 21:42:44

#	User	Length	Language	Date
1	Daniel Anker Hermansen	13475	Rust	2024-12-12 11:30:56

Solution running time distribution