Problem
Compute absolute difference between sum of two diagonals in a square matrix.
Input format
Input
input.txt
- First line: Integer N (1 ≤ N ≤ 100) - Next N lines: N integers
Output format
Output
output.txt
- A single integer: abs(primary_sum - secondary_sum)
Example
input
3 11 2 4 4 5 6 10 8 -12
output
15
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Sample cases (from the problem)
Sample Case 1
Input
3 11 2 4 4 5 6 10 8 -12
Expected output
15
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