Distinct Subsequences
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You are given a string, S, of length n consisting of only lower-case latin characters. A subsequence of a string S is any string obtained by deleting some (possible 0 or n) characters of S. For example, for the string "baboon", "b", "bboo", "aon" are valid subsequences while "no", "z" are not valid. You have to count the number of distinct subsequences of S that are lexicographically larger th
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solution.cppC++17
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