Given an array of strings A of size N and two integers B and C Let D be the number of strings of length C that contain exactly B of the strings in words as substrings. Return D modulo (10+9).
|A|<=6 |A[i]|,C<=50 B<=N
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Given an array of strings A of size N and two integers B and C Let D be the number of strings of length C that contain exactly B of the strings in words as substrings. Return D modulo (10+9).
|A|<=6 |A[i]|,C<=50 B<=N
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