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The smallest subset with maximum bitwise OR.
Can someone help me with this problem.
Given an array A of N numbers. We are required to find the size of the smallest subset of the array such that Bitwise OR is maximum possible.
$$$1 \leq N \leq 10^5$$$
$$$1 \leq A[i] \leq 10^6$$$
Sample input:
5
1 2 3 4 5
Sample output:
2
