Given an array a[] of N positive and negative numbers. Find if there is a subarray (of size at-least one) with 0 sum.

Input Format:
The first line of input contains an integer T denoting the number of test cases. Then T test cases follow. Each test case contains an integer n denoting the size of the array. The next line contains N space separated integers forming the array.

Output Format:
Print "Yes" (without quotes) if there exist a subarray of size at least one with sum equal to 0 or else print "No" ( without quotes).

Your Task:
This is a function problem. You only need to complete the function subArrayExists() that takes array and n as parameters and returns true or false.

1 <= T <= 100
1 <= N <= 104
-105 <= a[i] <= 105


4 2 -3 1 6
4 2 0 1 6


Testcase 1:
2, -3, 1 is the subarray with sum 0.


** For More Input/Output Examples Use 'Expected Output' option **

Contributor: Ayush Govil
Author: Ayush Govil 1

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