Lanran wants to cut one stick with length L into exactly N sticks with length \(L_i(i=1,2...N)\), so \(L = \sum{L_i}\). However, the cost to cut one stick in to two pieces is the length of the stick, that means cutting a stick with length x will cost x. Now he wants to know the minimal cost if he cuts stick optimally to get N sticks.

The first line will be an integer \(T (1 \leq T \leq 100)\), which is the number of test cases.
For each test data: 
The first line contains an integer N \((1 \leq N \leq 10^3 )\) — the number of sticks Lanran needs to get.
Then the next one line contains N  integers, the i-th integer \(L_i (1 \leq L_i \leq 10^5)\) indicates the length of N sticks Lanran wants to get.

For each case, contains one line,  print the minimal minimal cost.

1
4
1 4 2 6

23