Leetcode Problem 2732. Find a Good Subset of the Matrix

2732. Find a Good Subset of the Matrix

Leetcode Solutions

Iterate over each row in the grid and convert it to a binary number.
If a row is all zeros, return it as the good subset.
Use a map to store the binary representation of each row along with its index.
Iterate over all possible pairs of binary numbers from 0 to 31 (since the number of columns is at most 5).
For each pair, check if the bitwise AND is 0 and if both numbers are present in the grid.
If such a pair is found, return the indices of the corresponding rows.
If no good subset is found, return an empty list.

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