Multi-Language (Coding): Bob and a String Test

The question provides a string S of length N, consisting of letters from A to B, and Q operations that can be performed on the string. Each operation flips the capitalization of the characters from L[i] to R[i]. After performing all the Q operations, Bob wants to find the length of the longest substring of the string that contains only capital letters. If this length is equal to REQ, then Bob considers the initial string S a good string. The task is to find the total number of possible initial good strings, given the value of N.

This question tests the attendee's understanding of strings and their manipulation, as well as their ability to implement the given conditions to arrive at the final solution. The solution involves iterating through all possible initial strings, performing the given operations on each string, and checking if the resulting string satisfies the conditions for a good string.