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Prefix-Sum

Construct Product Matrix

Count Submatrices With Equal Frequency of X and Y

Count Submatrices with Top-Left Element and Sum Less Than k

Count Substrings That Satisfy K-Constraint II

Count the Number of Beautiful Subarrays

Count the Number of Houses at a Certain Distance I

Find Good Days to Rob the Bank

Find Kth Largest XOR Coordinate Value

Find Polygon With the Largest Perimeter

Find the Count of Monotonic Pairs I

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