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Solution: Most Stones Removed with Same Row or Column

Explore how to apply the union-find algorithm to identify connected groups of stones sharing rows or columns. Learn to calculate the maximum number of stones removable by grouping and combining sets efficiently, and understand the time and space complexity of this approach.

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] represents the ithi^{th} stone. Return the maximum possible number of stones that can be removed.

Constraints:

  • 11\leq
...