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Determine whether Alice (first player) has a forced win in a two-player partisan game where they alternately delete any non-empty substring of s with an odd number of vowels (Alice) or an even number of vowels (Bob); the challenge is to analyze optimal play on vowel-parity substrings and decide the winner for strings up to length 1e5.
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Leetcode 3227. Vowels Game in a String
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Source snapshot: Nov 12, 2026
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