3707. Equal Score Substrings

You are given a string s consisting of lowercase English letters. The score of a string is the sum of the positions of its characters in the alphabet, where 'a' = 1, 'b' = 2, ..., 'z' = 26. Determine whether there exists an index i such that the string can be split into two non-empty substrings s[0..i] and s[(i + 1)..(n - 1)] that have equal scores. Return true if such a split exists, otherwise