Problem A
Illumination — Problem Statistics

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Submissions	784
Accepted submissions	295
Submission ratio	37.63%
Authors	229
Full solves [?]	193
Full solve Ratio	84.28%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.01 s	C	2019-07-23 07:03:14

#	User	Runtime	Language	Date
1	Norbert Voelker	0.08 s	Go	2022-04-30 22:34:16

#	User	Runtime	Language	Date
1	Sam Reinehr	0.10 s	Java	2018-10-27 18:15:13
2	Måns Magnusson	0.10 s	Java	2018-11-01 23:35:32
3	Ian Montaño Pardo	0.10 s	Java	2024-09-18 03:41:21
4	Brent Yorgey	0.10 s	Java	2024-11-26 17:29:02
5	Andrew Polizzotto	0.11 s	Java	2019-10-19 03:13:08
6	Nick Wu	0.13 s	Java	2021-08-01 17:17:24
7	Luke Eales	0.13 s	Java	2023-09-29 12:30:55
8	Pascal Finn Ribas	0.13 s	Java	2025-12-15 16:33:56
9	Shomik Ghose	0.14 s	Java	2018-10-13 01:00:19
10	John Park	0.16 s	Java	2018-10-13 01:12:55

#	User	Runtime	Language	Date
1	Aksel Holbek Sørbye	0.51 s	Kotlin	2025-09-19 11:44:17

#	User	Runtime	Language	Date
1	Andreas Björklund	0.09 s	Python 2	2019-11-28 19:01:32
2	Kevin Tang	0.09 s	Python 2	2019-12-30 22:49:48
3	Måns Magnusson	0.20 s	Python 2	2019-09-29 12:59:37
4	Maj Stenmark	0.20 s	Python 2	2019-10-04 11:50:47

#	User	Runtime	Language	Date
1	Isaac Lee	0.06 s	Python 3	2019-02-09 01:20:49
2	Brixtin Walker	0.08 s	Python 3	2025-11-17 02:42:50
3	David Pizzolongo	0.08 s	Python 3	2025-11-18 22:21:40
4	Lawry Sorenson	0.09 s	Python 3	2022-03-09 04:22:16
5	Doug Goodman	0.09 s	Python 3	2023-06-24 17:16:47
6	Jiaming Kong	0.09 s	Python 3	2025-08-07 07:31:32
7	John Swingle	0.10 s	Python 3	2022-03-09 18:18:46
8	einar bratthall	0.10 s	Python 3	2023-03-01 17:08:02
9	Nicholas Russell Saerang	0.10 s	Python 3	2023-09-02 23:56:50
10	Fan Zhang	0.11 s	Python 3	2022-06-05 00:05:00

#	User	Runtime	Language	Date
1	Muhammad Rais Fathin Mudzakir	0.00 s	Rust	2023-03-21 18:09:39
2	Frank Endriss	0.00 s	Rust	2024-09-05 15:55:42
3	ErikWDev	0.01 s	Rust	2022-04-27 17:38:11
4	Niklas Sandén	0.02 s	Rust	2023-03-01 13:37:08

#	User	Length	Language	Date
1	Ivan Petrov	2811	C	2019-07-23 07:03:14

#	User	Length	Language	Date
1	Minh Nguyen	1152	C++	2018-11-21 08:49:27
2	Zicheng Zhen	1210	C++	2018-04-28 20:51:46
3	Yuxin Sun	1300	C++	2018-02-24 21:02:53
4	William Gan	1378	C++	2018-03-11 14:36:58
5	Ziyi Zhang	1427	C++	2018-02-27 02:14:53
6	study	1488	C++	2022-06-28 16:28:48
7	Võ Trần Ngọc Vy	1528	C++	2025-07-22 04:42:29
8	Alexander Skidanov	1592	C++	2025-06-24 11:43:26
9	Вадим Козлов	1615	C++	2022-04-29 00:45:05
10	Neal Zane	1624	C++	2019-07-25 20:49:14

#	User	Length	Language	Date
1	Norbert Voelker	3906	Go	2022-04-30 22:40:41

#	User	Length	Language	Date
1	Sam Reinehr	2259	Java	2018-10-27 18:15:13
2	Måns Magnusson	2731	Java	2018-11-01 23:35:32
3	Ian Montaño Pardo	3080	Java	2024-09-18 03:52:36
4	Andrew Polizzotto	3219	Java	2019-10-19 03:13:08
5	Luke Eales	3519	Java	2023-09-29 12:28:46
6	Shomik Ghose	3644	Java	2018-10-13 01:00:19
7	Crystal Sharpe	3797	Java	2020-06-28 00:46:39
8	Alex Coleman	4322	Java	2018-10-15 18:06:53
9	Pascal Finn Ribas	5833	Java	2025-12-15 16:33:56
10	Nick Wu	5942	Java	2021-08-01 17:17:24

#	User	Length	Language	Date
1	Aksel Holbek Sørbye	27501	Kotlin	2025-09-19 10:48:09

#	User	Length	Language	Date
1	Kevin Tang	1557	Python 2	2019-12-30 23:10:53
2	Andreas Björklund	1878	Python 2	2019-11-28 19:01:32
3	Måns Magnusson	1944	Python 2	2019-09-29 12:59:37
4	Maj Stenmark	1990	Python 2	2019-10-04 11:50:47

#	User	Length	Language	Date
1	Paul Swingle	967	Python 3	2023-02-22 01:51:25
2	Nicholas Russell Saerang	1305	Python 3	2023-09-02 23:56:50
3	Lawry Sorenson	1869	Python 3	2022-03-09 04:22:16
4	Doug Goodman	1932	Python 3	2023-06-24 17:16:47
5	Julius Thunström	2161	Python 3	2022-04-20 23:58:53
6	Lennart Meyling	2360	Python 3	2023-07-27 15:59:39
7	einar bratthall	2491	Python 3	2022-04-29 12:41:55
8	Jonathan Cederlund	2593	Python 3	2023-03-02 12:05:01
9	Cheng Jack	2640	Python 3	2022-06-05 22:22:31
10	Benjamin Kugelberg	2780	Python 3	2022-04-27 17:50:24

#	User	Length	Language	Date
1	ErikWDev	4449	Rust	2022-04-27 17:42:02
2	Frank Endriss	7312	Rust	2024-09-05 15:55:42
3	Muhammad Rais Fathin Mudzakir	12399	Rust	2023-03-21 18:09:39
4	Niklas Sandén	28685	Rust	2023-03-01 13:37:08

Solution running time distribution