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Help finding sum of the number of distinct characters in all the distinct substrings of string S.
How to solve the following problem. Find the sum of the number of distinct characters in all the distinct substrings of S. 1<=|S|<=100000. S="aabb"
Set of distinct sub-strings of "aabb" = {a,b,aa,ab,bb,aab,abb,aabb} sum = 1 + 1 + 1 + 2 + 1 + 2 + 2 + 2 = 12.
Thanks!
