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Solution: Most Stones Removed with Same Row or Column

Understand how to apply the union find algorithm to group stones sharing rows or columns. Learn to calculate the maximum number of stones removable by forming connected components and optimizing the process beyond naive pairwise checking.

Statement

Given an array of nn stones in a two-dimensional plane, where each stone is represented by a pair of x and y coordinates, find the maximum number of stones we can remove with the following condition:

A stone can be removed if it shares either the same row or the same column with another stone that has not been removed so far.

Stones are provided as an array, stones, of length nn, where stones[i]=[xi,yi]stones[i] = [x_i, y_i] ...