Ticket Status: CF Stress

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Ticket	7038
Problem	1680 -b

View hacks & all small testcases

If you want a smaller (or larger), testcase, copy the Generator Parameters, click on Retry, paste it to Compressed parameters and edit it.

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

Retry

Input

2
3 3
RRE
EEE
ERR
1 3
EER

Expected Output

YES
YES

Generator Parameters

--row_or_col_high 3 --row_or_col_low 1 --t_high 2 --t_low 1