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How to find the number of words of length N<4000, given that there are K number of forbidden sequences(K<2000). Each forbidden sequence is given and length of a forbidden sequence is less than N. Each word is made up of S number of characters (S<4000). So total number of words are S^N. Sum of length of forbidden sequences is less than 4000.
Cheers
Link to question plz ?
It won't be accessible from outside my office :(