Problem D
Magic Checkerboard — Problem Statistics

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Submissions	4308
Accepted submissions	629
Submission ratio	14.60%
Authors	535
Full solves [?]	320
Full solve Ratio	59.81%

#	User	Runtime	Language	Date
1	kerem celik	0.07 s	C	2020-01-30 22:50:20
2	Ivan Petrov	0.28 s	C	2019-05-30 13:46:28
3	Daniel Rubery	0.32 s	C	2015-03-28 19:41:47
4	Benjamin Darnell	0.34 s	C	2020-01-29 09:07:09
5	Seif Ibrahim	0.34 s	C	2020-01-29 10:55:42
6	Alexander Bilde Pedersen	0.41 s	C	2023-02-10 23:26:32

#	User	Runtime	Language	Date
1	Jonas Nockert	0.07 s	C++	2017-05-21 08:55:55
2	kerem celik	0.07 s	C++	2020-01-31 01:00:20
3	Presley Graham	0.08 s	C++	2020-02-28 20:27:32
4	Lukas Rickie	0.08 s	C++	2021-08-29 11:10:58
5	Nguyen Thanh An	0.09 s	C++	2021-09-05 16:50:18
6	Kevin Liu	0.10 s	C++	2016-04-10 20:34:38
7	Brandon Zhang	0.10 s	C++	2023-11-24 01:07:04
8	Johan Sannemo	0.23 s	C++	2016-12-07 23:25:11
9	David Berard	0.23 s	C++	2018-03-24 15:17:49
10	Federico Glaudo	0.23 s	C++	2020-11-21 09:08:50

#	User	Runtime	Language	Date
1	Joshua Kirstein	0.26 s	Java	2016-11-03 01:23:17
2	Bjørn Dons	0.33 s	Java	2019-02-22 23:17:49
3	Melanie Kirsche	0.41 s	Java	2015-03-28 18:10:05
4	Gaby Llave	0.41 s	Java	2015-03-28 21:58:49
5	Jan Štola	0.41 s	Java	2015-06-04 16:40:13
6	Josenildo Silva	0.43 s	Java	2017-07-08 04:26:32
7	Kurtis Van Gent	0.55 s	Java	2016-06-16 21:34:05
8	Minh Phan Duc Nhat	0.57 s	Java	2018-01-11 16:04:53
9	Zeleng Zhuang	0.63 s	Java	2016-03-21 08:51:22
10	Micah Stairs	0.63 s	Java	2016-04-14 04:46:22

#	User	Runtime	Language	Date
1	Ursula Hebert-Johnson	2.22 s	JavaScript (Node.js)	2020-01-31 22:24:04

#	User	Runtime	Language	Date
1	Erik Odenman	0.72 s	Python 2	2015-06-09 20:07:38
2	Trausti Sæmundsson	1.16 s	Python 2	2015-04-26 16:48:13
3	Andreas Björklund	1.27 s	Python 2	2020-09-17 04:16:22
4	Henrik Adolfsson	1.36 s	Python 2	2016-11-08 14:43:23
5	Zeyu He	3.44 s	Python 2	2020-01-31 20:02:49

#	User	Runtime	Language	Date
1	Anikait Mundhra	0.40 s	Python 3	2024-04-19 22:02:01
2	Christian Lebeda	0.50 s	Python 3	2021-02-20 22:18:29
3	Mai Dang	0.63 s	Python 3	2024-04-30 21:27:13
4	Jakob Israelsen	0.65 s	Python 3	2021-02-21 16:14:33
5	Pham Minh Tuan	0.71 s	Python 3	2021-08-29 07:41:53
6	Hokan	0.74 s	Python 3	2024-06-04 00:06:11
7	Samuel Ducharme	0.75 s	Python 3	2024-05-12 01:53:49
8	Laith Bohsali	0.81 s	Python 3	2025-02-20 23:44:49
9	Cookieblues	0.91 s	Python 3	2021-02-18 12:55:17
10	Michael Goldwasser	0.92 s	Python 3	2024-10-04 05:01:54

#	User	Runtime	Language	Date
1	Minghao Zhang	0.12 s	Rust	2024-04-26 00:13:12
2	Mckinley Xie	0.49 s	Rust	2025-02-24 22:19:13

#	User	Length	Language	Date
1	Ivan Petrov	1792	C	2019-05-30 13:46:28
2	Daniel Rubery	1862	C	2015-03-28 19:41:47
3	kerem celik	2376	C	2020-01-30 20:41:14
4	Benjamin Darnell	2508	C	2020-01-29 21:09:33
5	Seif Ibrahim	2832	C	2020-01-29 10:55:42
6	Alexander Bilde Pedersen	5575	C	2023-02-10 23:19:45

#	User	Length	Language	Date
1	Jeehak Yun	763	C++	2015-04-02 13:58:27
2	Johan Wind	979	C++	2018-11-05 17:30:46
3	Mohammad Nematollahi	996	C++	2020-02-18 23:15:38
4	Suchir Balaji	1027	C++	2016-04-10 20:48:34
5	Wen Li Looi	1162	C++	2015-03-28 23:16:59
6	Quy Dang	1214	C++	2025-04-02 17:59:57
7	Pasin Manurangsi	1235	C++	2016-04-10 09:20:10
8	Daniel Lokshtanov	1235	C++	2020-01-28 05:43:57
9	Joakim Blikstad	1242	C++	2021-09-01 19:12:30
10	Demi Guo	1269	C++	2015-03-28 17:56:13

#	User	Length	Language	Date
1	Doug Goodman	1475	Java	2016-06-12 15:16:19
2	David Liu	1535	Java	2015-03-28 20:39:19
3	Alex Coleman	1617	Java	2017-04-11 03:19:05
4	Kurtis Van Gent	1702	Java	2016-06-16 21:34:05
5	Hossam Youssef	1844	Java	2016-08-28 02:46:26
6	Bảo Võ Hoàng	1844	Java	2021-09-01 14:32:05
7	Hidden user	1996	Java	2015-03-28 19:44:43
8	Nicholas Sharp	2065	Java	2015-03-29 21:56:02
9	Lee Berman	2401	Java	2015-03-28 22:07:20
10	Minh Phan Duc Nhat	2626	Java	2018-01-11 16:04:53

#	User	Length	Language	Date
1	Ursula Hebert-Johnson	6397	JavaScript (Node.js)	2020-01-31 22:24:04

#	User	Length	Language	Date
1	Erik Odenman	788	Python 2	2015-06-09 20:07:38
2	Andreas Björklund	1567	Python 2	2020-09-17 04:16:22
3	Trausti Sæmundsson	3011	Python 2	2015-04-26 16:48:13
4	Henrik Adolfsson	3552	Python 2	2016-11-08 14:43:23
5	Zeyu He	6813	Python 2	2020-01-31 20:02:49

#	User	Length	Language	Date
1	Michael Goldwasser	441	Python 3	2024-10-04 05:08:19
2	Mateo Wang	1109	Python 3	2024-04-30 10:16:24
3	Kelly Dance	1330	Python 3	2022-07-16 22:56:56
4	Mai Dang	1630	Python 3	2024-04-30 21:27:13
5	Laith Bohsali	1749	Python 3	2025-02-20 23:44:49
6	Hokan	1920	Python 3	2024-06-03 23:59:19
7	Cookieblues	1924	Python 3	2021-02-18 12:55:17
8	Pham Minh Tuan	2226	Python 3	2021-08-29 07:41:53
9	Jakob Israelsen	2492	Python 3	2021-02-21 11:54:02
10	Christian Lebeda	2640	Python 3	2021-02-20 22:18:29

#	User	Length	Language	Date
1	Mckinley Xie	2515	Rust	2025-02-24 22:19:13
2	Minghao Zhang	4867	Rust	2024-04-25 21:41:07

Solution running time distribution