Given an array A of N elements. The task is to complete the function which returns true if triplets exists in array A whose sum is zero else returns false.

Input Format:
The first line of input contains an integer T, denoting the number of test cases. Then T test cases follow. The first line of each test case contains an integer N, denoting the number of elements in array. The second line of each test case contains N space separated values of the array.

Output:
For each test case, output will be 1 if triplet exists else 0.

Your Task:
Your task is to only complete the function to findTriplets().

Constrains:
1 <= T <= 100
1 <= N <= 10⁶
-10⁶ <= A <= 10⁶

Example:
Input:
2
5
0 -1 2 -3 1
3
1 2 3

Output:
1
0

Explanation:
Testcase 1: 0, -1 and 1 forms a triplet with sum equal to 0.
Testcase 2: No triplet exists which sum to 0.
 

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