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- using System;
- using System.Linq;
- class Program
- {
- static void Main()
- {
- int n = int.Parse(Console.ReadLine());
- int[][] matrix = new int[n][];
- for (int i = 0; i < matrix.Length; i++)
- {
- matrix[i] = Console.ReadLine().Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).Select(int.Parse).ToArray();
- }
- int primaryDiagonal = 0;
- int secondaryDiagonal = 0;
- for (int i = 0; i < n; i++)
- {
- primaryDiagonal += (matrix[i][i]);
- }
- for (int i = 0; i < n; i++)
- {
- secondaryDiagonal += (matrix[i][matrix[i].Length - 1 - i]);
- }
- Console.WriteLine(Math.Abs(primaryDiagonal - secondaryDiagonal));
- }
- }
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