You are given an array A of size N. You need to print the total count of sub-arrays having their sum equal to 0
First line of the input contains an integer T denoting the number of test cases. Each test case consists of two lines. First line of each test case contains an Integer N denoting the size of the array, and the second line contains N space separated integers.
For each test case, in a new line, print the total number of subarrays whose sum is equal to 0.
1 <= T <= 100
1<= N <= 107
-1010 <= Ai <= 1010
0 0 5 5 0 0
6 -1 -3 4 -2 2 4 6 -12 -7
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