Given an array A[ ] of N sorted positive integers, find the smallest positive integer S such that S cannot be represented as sum of elements of any subset of the given array set.
The first line of input contains an integer T denoting the number of test cases. Then T test cases
The first line of each test case contains a positive integer N, denoting the length of the array A[ ].
The second line of each test case contains a N space separated positive integers, denoting the
elements of the array A[ ].
Note: The elements of the array should be sorted in ascending order.
Print out the the smallest number S that is not equal to sum of elements of any subset.
1 <= T <= 100
0 < N <= 106
0 <= A[ ] <= 1015
1 2 3
1 10 12 20
3 6 9 10 20 28
1 1 1 2 3
Testcase 1: 7 is the smallest positive number for which any subset is not present with sum 7.
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