 Make Matrix Beautiful
Medium Accuracy: 51.96% Submissions: 1323 Points: 4

Given a Square matrix mat[] of size NxN. Your task is to find minimum number of operation(s) that are required to make the matrix Beautiful.
A Beautiful matrix is a matrix in which sum of elements in each row and column is equal. In one operation you can only increment any value of cell of matrix by 1.

Input:
First line of the input contains an integer T denoting the number of test cases. Then T test case follows. First line of each test case contains an integer N denoting the size of the matrix. Next line contains NxN space separated integers denoting the elements of the matrix.

Output:
For each test case print a single integer in a new line denoting the minimum number of operations required that needed to be performed.

Constraints:
1 <= T <= 150
1 <= N <= 100
1 <= mat[i][j] <= 150

Example:
Input:

2
2
1 2 3 4
3
1 2 3 4 2 3 3 2 1

Output:
4
6

Explanation:
TestCase 1:

4 3
3 4
1. Increment value of cell(0, 0) by 3
2. Increment value of cell(0, 1) by 1
Hence total 4 operation are required. 