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Ticket 3676
Problem 1647 -b
View hacks & all small testcases

Unable to dry run this testcase?
Try making a new request with small values of n_high, t_high, *_high, etc.


Retry
Input
2
7 6
010000
101111
011000
111111
000100
111010
000011
1 6
001101
Expected Output
NO
YES
Generator Parameters
--col_high 7 --col_low 1 --row_high 7 --row_low 1 --t_high 2 --t_low 1