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CF1847B.Hamon Odyssey
Hamon Odyssey
Jonathan is fighting against DIO's Vampire minions. There are of them with strengths .
Denote as the group consisting of the vampires with indices from to . Jonathan realizes that the strength of any such group is in its weakest link, that is, the bitwise AND. More formally, the strength level of the group is defined as $$f(l,r) = a_l \and a_{l+1} \and a_{l+2} \and \ldots \and a_r.$$Here,denotes the bitwise AND operation.
Because Jonathan would like to defeat the vampire minions fast, he will divide the vampires into contiguous groups, such that each vampire is in exactly one group, and the sum of strengths of the groups is minimized. Among all ways to divide the vampires, he would like to find the way with the maximum number of groups.
Given the strengths of each of the vampires, find the maximum number of groups among all possible ways to divide the vampires with the smallest sum of strengths.
Input
The first line contains a single integer — the number of test cases. The description of test cases follows.
The first line of each test case contains a single integer () — the number of vampires.
The second line of each test case contains integers () — the individual strength of each vampire.
The sum of over all test cases does not exceed .
Output
For each test case, output a single integer — the maximum number of groups among all possible ways to divide the vampires with the smallest sum of strengths.
Note
In the first test case, the optimal way is to take all the vampires as a group. So, .
In the second test case, the optimal way is to make groups, and . So, $f(1,3) + f(4,5) = (2 \and 3 \and 1) + (5 \and 2) = 0 + 0 = 0$.
Samples
3
3
1 2 3
5
2 3 1 5 2
4
5 7 12 6
1
2
1
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