Unique Substrings in Wraparound String

Valid Permutations for DI Sequence

Longest Unequal Adjacent Groups Subsequence II

Longest Unequal Adjacent Groups Subsequence I

Total Characters in String After Transformations II

Total Characters in String After Transformations I

Count Number of Balanced Permutations

Push Dominoes

Find All Possible Recipes from Given Supplies

Number of Substrings Containing All Three Characters

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