# HackerRank ‘Diagonal Difference’ Solution

Given a square matrix of size NxN, calculate the absolute difference between the sums of its diagonals.

Input Format

The first line contains a single integer, N . The next N lines denote the matrix’s rows, with each line containing N space-separated integers describing the columns.

Output Format

Print the absolute difference between the two sums of the matrix’s diagonals as a single integer.

Sample Input

3
11 2 4
4 5 6
10 8 -12


Sample Output

15


Explanation

The primary diagonal is:

11
5
-12


Sum across the primary diagonal: 11 + 5 – 12 = 4

The secondary diagonal is:

     5
4
10


Sum across the secondary diagonal: 4 + 5 + 10 = 19
Difference: |4 – 19| = 15

Here is the solution