947. Most Stones Removed with Same Row or Column
https://leetcode.com/problems/most-stones-removed-with-same-row-or-column/
On a 2D plane, we place stones at some integer coordinate points. Each coordinate point may have at most one stone.
Now, a move consists of removing a stone that shares a column or row with another stone on the grid.
What is the largest possible number of moves we can make?
Example 1:
Input: stones = [[0,0],[0,1],[1,0],[1,2],[2,1],[2,2]] Output: 5
Example 2:
Input: stones = [[0,0],[0,2],[1,1],[2,0],[2,2]] Output: 3
Example 3:
Input: stones = [[0,0]] Output: 0
Note:
1 <= stones.length <= 10000 <= stones[i][j] < 10000
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