Multiply Array
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Calculate the product of all the elements in an array.

Input:
The first line of input contains an integer T denoting the number of test cases. Then T test cases follow. Each test case consist of two lines . The first line of each test case contains an integer N.The second line of each test case contains N space separated integers denoting elements of the array A[ ].

Output:
For each test case in a new line print the product of all elements.

Constraints:
1  ≤ T  ≤  50
1  ≤  N  ≤  10
1  ≤  A[i]  ≤  5

Example:
Input:
2
5
1 2 3 4 5
10
5 5 5 5 5 5 5 5 5 5

Output:
120
9765625

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

Contributor: karan kumar
Author: karanshrm44


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