Find Longest Special Substring That Occurs Thrice 2

Find Longest Special Substring That Occurs Thrice 1

Longest Substring with Same Letters after Replacement

Rotting Oranges

Count of Substrings Containing Every Vowel and K Consonants 1

Count of Substrings Containing Every Vowel and K Consonants 2

Minimum Recolors to Get K Consecutive Black Blocks

Count Unguarded Cells in the Grid

Take K of Each Character From Left and Right Problem

Maximum Sum of Distinct Subarrays With Length K Problem

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