Problem B
Colouring Book — Problem Statistics

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Submissions	650
Accepted submissions	139
Submission ratio	21.38%
Authors	101
Full solves [?]	86
Full solve Ratio	85.15%

#	User	Runtime	Language	Date
1	Dmitry Lyubshin	0.04 s	C++	2018-07-02 11:08:00
2	Ian DeHaan	0.04 s	C++	2022-03-01 07:24:21
3	Kai Luedemann	0.04 s	C++	2023-11-07 02:21:13
4	Bulat Ibragimov	0.04 s	C++	2025-08-04 13:26:52
5	Alexander Skidanov	0.04 s	C++	2025-08-04 13:34:32
6	Xander Fair	0.04 s	C++	2025-10-30 00:20:28
7	Jacob Jackson	0.05 s	C++	2017-04-01 20:03:18
8	Sean Purcell	0.05 s	C++	2017-04-01 20:42:35
9	David Sturgill	0.05 s	C++	2019-09-29 07:30:29
10	Jiacheng Wu	0.05 s	C++	2022-03-16 17:50:50

#	User	Runtime	Language	Date
1	Finn Lidbetter	0.27 s	Java	2017-06-07 03:03:06
2	Micah Stairs	0.32 s	Java	2017-06-09 05:17:37
3	Samuel Klingström	0.42 s	Java	2018-12-08 15:13:17
4	Arup Ratan Guha	0.81 s	Java	2023-04-12 21:15:32

#	User	Runtime	Language	Date
1	Björn Magnusson	0.50 s	Python 2	2020-10-20 18:55:29
2	Andreas Björklund	0.81 s	Python 2	2020-11-28 16:06:41

#	User	Runtime	Language	Date
1	blin	0.30 s	Python 3	2025-11-11 05:19:02
2	Hidden user	0.33 s	Python 3	2022-11-13 08:38:04
3	Nicholas Russell Saerang	0.34 s	Python 3	2025-04-28 05:16:43
4	Zac Friggstad	0.38 s	Python 3	2022-03-01 07:19:41
5	Hidden user	0.51 s	Python 3	2022-11-14 01:07:04
6	Tiansheng Zhang	0.53 s	Python 3	2022-03-21 21:29:27
7	Doug Goodman	0.54 s	Python 3	2023-06-25 19:48:44
8	Maj Stenmark	0.56 s	Python 3	2020-09-13 14:17:58
9	Thore Husfeldt	0.63 s	Python 3	2020-09-12 21:03:09
10	Firas Al Chalabi	0.65 s	Python 3	2022-11-08 07:46:37

#	User	Length	Language	Date
1	Lucas Turci	1930	C++	2019-08-08 16:55:58
2	Dmitry Lyubshin	2025	C++	2018-07-02 11:08:00
3	Sean Purcell	2279	C++	2017-04-01 20:42:35
4	Alexander Skidanov	2338	C++	2025-08-04 13:34:32
5	Zac Friggstad	2339	C++	2022-03-01 06:58:24
6	Bulat Ibragimov	2444	C++	2025-08-04 13:26:52
7	Brandon Zhang	2464	C++	2023-11-25 03:16:07
8	Yuesong Zou	2523	C++	2022-01-27 14:07:38
9	Xander Fair	3204	C++	2025-10-30 00:20:28
10	Ivan Zhang	3237	C++	2022-03-21 00:24:47

#	User	Length	Language	Date
1	Finn Lidbetter	3277	Java	2017-06-07 03:03:06
2	Micah Stairs	3400	Java	2017-06-09 05:17:37
3	Arup Ratan Guha	5528	Java	2023-04-12 21:15:32
4	Samuel Klingström	16536	Java	2018-12-08 15:26:55

#	User	Length	Language	Date
1	Andreas Björklund	1614	Python 2	2020-11-28 16:06:41
2	Björn Magnusson	4688	Python 2	2020-10-20 18:55:29

#	User	Length	Language	Date
1	Zac Friggstad	1108	Python 3	2022-03-01 07:34:08
2	Nicholas Russell Saerang	1486	Python 3	2025-06-10 18:41:57
3	Maj Stenmark	1917	Python 3	2020-09-13 14:17:58
4	Erik Amirell Eklöf	2032	Python 3	2020-09-10 19:53:41
5	Doug Goodman	2144	Python 3	2023-06-25 19:48:44
6	Thore Husfeldt	2197	Python 3	2020-09-12 22:21:32
7	blin	2685	Python 3	2025-11-11 05:19:02
8	Tiansheng Zhang	3305	Python 3	2022-03-21 21:29:27
9	Firas Al Chalabi	3569	Python 3	2022-11-08 08:33:53
10	Hidden user	3607	Python 3	2022-11-13 08:38:04

Solution running time distribution