Problem A
Grid Magic — Problem Statistics

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Submissions	599
Accepted submissions	292
Submission ratio	48.75%
Authors	261
Accepted authors	234
Author ratio	89.66%

#	User	Runtime	Language	Date
1	Bergur Snorrason	0.00 s	C	2020-11-19 20:26:45
2	Mikael K Eriksson	0.00 s	C	2021-05-24 09:18:32
3	Teikn Smith	0.00 s	C	2022-07-06 22:44:44

#	User	Runtime	Language	Date
1	Norbert Voelker	0.08 s	Go	2021-07-19 20:12:23

#	User	Runtime	Language	Date
1	Steinar Simonnes	0.00 s	Haskell	2024-12-28 14:34:52
2	Brent Yorgey	0.01 s	Haskell	2020-11-20 15:32:30
3	Hidden user	0.01 s	Haskell	2021-06-08 13:27:36

#	User	Runtime	Language	Date
1	Mack Wong Yoong Yee	0.05 s	Java	2024-06-20 12:22:57
2	David Harmeyer	0.06 s	Java	2020-10-24 21:22:41
3	Sharon Barak	0.06 s	Java	2020-10-24 21:28:00
4	Sathvik Kuthuru	0.06 s	Java	2020-10-24 21:32:50
5	Colin Sullivan	0.06 s	Java	2020-10-24 21:39:20
6	Mong-En Ip	0.06 s	Java	2020-10-24 21:53:39
7	Jacob Magnuson	0.06 s	Java	2020-10-24 22:04:32
8	Chris Gittings	0.06 s	Java	2020-10-24 23:46:13
9	Crystal Sharpe	0.06 s	Java	2020-11-25 07:37:12
10	Steven Cheng	0.06 s	Java	2020-12-20 04:05:33

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2020-12-02 15:33:08
2	Christian Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-05-21 02:45:40

#	User	Runtime	Language	Date
1	Timothy Gaede	0.78 s	Julia	2024-06-06 16:48:28

#	User	Runtime	Language	Date
1	Andy Phan	0.16 s	Kotlin	2020-10-24 22:55:21
2	Adam Rankin	0.19 s	Kotlin	2023-08-30 18:21:05

#	User	Runtime	Language	Date
1	Ethan Arnold	0.04 s	Python 2	2020-10-24 21:36:39

#	User	Runtime	Language	Date
1	Peter Stauder	0.04 s	Python 3	2022-08-26 22:19:02
2	Iman Khodadi	0.04 s	Python 3	2023-07-01 09:11:43
3	Nicholas Russell Saerang	0.04 s	Python 3	2023-07-23 23:45:19
4	Joshua Brody	0.04 s	Python 3	2024-10-15 20:06:24
5	Samuel McDowell	0.04 s	Python 3	2024-10-30 14:53:22
6	Kyle Wells	0.04 s	Python 3	2024-10-31 03:00:16
7	Ahmed Chamseddine	0.04 s	Python 3	2025-01-30 17:12:13
8	DHARSHAN V S	0.04 s	Python 3	2025-03-26 19:14:12
9	Gv Bin	0.04 s	Python 3	2025-06-29 05:12:10
10	Zac Friggstad	0.05 s	Python 3	2020-10-31 00:46:42

#	User	Runtime	Language	Date
1	Hidden user	0.05 s	Ruby	2020-12-28 09:18:25
2	Thomas Feld	0.05 s	Ruby	2023-03-07 12:33:39
3	Miorel Palii	0.69 s	Ruby	2022-03-23 08:14:25

#	User	Runtime	Language	Date
1	Fiat Driver	0.00 s	Rust	2023-06-27 00:33:02
2	Bas Dirks	0.00 s	Rust	2024-01-17 17:58:05
3	Daniel Anker Hermansen	0.00 s	Rust	2024-10-04 08:00:34

#	User	Length	Language	Date
1	Teikn Smith	328	C	2022-07-06 22:44:44
2	Mikael K Eriksson	985	C	2021-05-24 09:18:32
3	Bergur Snorrason	2690	C	2020-11-19 20:26:45

#	User	Length	Language	Date
1	Yen-Hsiang Chang	298	C++	2020-10-24 21:30:50
2	Hyunjun Lee	369	C++	2022-11-22 15:26:44
3	Mattia Marziali	372	C++	2025-06-08 13:52:13
4	Petru Lungu	385	C++	2021-01-31 13:09:58
5	Sorana Maria Gligor	435	C++	2021-01-31 13:10:57
6	Dominik Kubicki	447	C++	2020-11-25 18:12:28
7	Yucheng Dai	509	C++	2020-10-24 22:00:37
8	kiran bhattar	534	C++	2022-01-22 13:49:01
9	Dmitry Lyubshin	638	C++	2023-04-07 17:23:06
10	Chris Trevisan	680	C++	2020-10-24 22:50:22

#	User	Length	Language	Date
1	Norbert Voelker	2030	Go	2021-07-19 20:12:23

#	User	Length	Language	Date
1	Steinar Simonnes	1241	Haskell	2024-12-28 14:44:26
2	Brent Yorgey	2039	Haskell	2020-11-20 15:32:30
3	Hidden user	12145	Haskell	2021-06-08 13:27:36

#	User	Length	Language	Date
1	Crystal Sharpe	629	Java	2020-11-25 07:37:12
2	Ben Cobb	1023	Java	2024-02-29 18:52:22
3	Arup Ratan Guha	1096	Java	2020-10-24 21:33:47
4	Mack Wong Yoong Yee	1135	Java	2024-06-20 12:22:57
5	Jay Doshi	1323	Java	2020-10-24 22:22:41
6	Quinn Gilbert	1351	Java	2020-10-24 22:30:32
7	Godmar Back	1433	Java	2020-11-02 19:55:34
8	Colin Sullivan	1483	Java	2020-10-24 21:39:20
9	Hidden user	1526	Java	2020-10-25 01:11:55
10	David Harmeyer	1540	Java	2020-10-24 21:22:41

#	User	Length	Language	Date
1	Christian Cederquist	72	JavaScript (SpiderMonkey)	2024-10-14 14:00:28
2	Bjørn Chr. Soltvedt	1501	JavaScript (SpiderMonkey)	2020-12-02 15:33:08

#	User	Length	Language	Date
1	Timothy Gaede	3064	Julia	2024-06-06 16:48:28

#	User	Length	Language	Date
1	Adam Rankin	542	Kotlin	2023-08-30 18:21:05
2	Andy Phan	1260	Kotlin	2020-10-24 22:55:21

#	User	Length	Language	Date
1	Ethan Arnold	1633	Python 2	2020-10-24 21:36:39

#	User	Length	Language	Date
1	Benjamin Z White	100	Python 3	2023-04-30 17:26:59
2	Nicholas Russell Saerang	152	Python 3	2023-07-23 23:45:19
3	Peter Stauder	156	Python 3	2022-08-26 22:31:56
4	Hidden user	160	Python 3	2021-01-02 02:20:42
5	Hidden user	195	Python 3	2023-01-13 03:40:59
6	Zac Friggstad	208	Python 3	2020-10-31 00:46:42
7	Iman Khodadi	223	Python 3	2023-07-01 09:11:43
8	Christian Blumenthal	236	Python 3	2023-06-23 03:16:52
9	Erik Amirell Eklöf	293	Python 3	2021-08-25 18:01:37
10	Steven Halim	308	Python 3	2020-12-03 04:22:48

#	User	Length	Language	Date
1	Thomas Feld	66	Ruby	2024-10-14 13:46:19
2	Hidden user	309	Ruby	2020-12-28 09:18:25
3	Miorel Palii	825	Ruby	2022-03-23 08:14:25

#	User	Length	Language	Date
1	Bas Dirks	1798	Rust	2024-01-17 17:58:05
2	Fiat Driver	3422	Rust	2023-06-27 00:35:06
3	Daniel Anker Hermansen	28650	Rust	2024-10-04 08:00:34

Solution running time distribution