Blank Space
You are given a binary array $$$a$$$ of $$$n$$$ elements, a binary array is an array consisting only of $$$0$$$s and $$$1$$$s. A blank space is a segment of consecutive elements consisting of only $$$0$$$s. Your task is to find the length of the longest blank space.
The first line contains a single integer $$$t$$$ ($$$1 \leq t \leq 1000$$$) — the number of test cases.The first line of each test case contains a single integer $$$n$$$ ($$$1 \leq n \leq 100$$$) — the length of the array.The second line of each test case contains $$$n$$$ space-separated integers $$$a_i$$$ ($$$0 \leq a_i \leq 1$$$) — the elements of the array.
For each test case, output a single integer — the length of the longest blank space.
for g in [*open(0)][2::2]:
    print(max(map(len, g[::2].split('1'))))
for s in [*open(0)][2::2]:
    print(max(map(len, s[::2].split('1'))))
for s in [*open(0)][2::2]:
    print(max(map(len, s[::2].split('1'))))