Matrix.java

import java.util.Scanner;

public class Matrix {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int row = sc.nextInt();
        int col = sc.nextInt();
        int[][] arr = new int[row][col];

        for(int i = 0; i < row; i++) {
            for (int j = 0 ; j < col; j++) {
                arr[i][j] = sc.nextInt();
            }
        }

        for(int i = 0; i < row; i++) {
            for (int j = 0 ; j < col; j++) {
                System.out.print(arr[i][j] + " ");
            }
            System.out.println();
        }

        int leftDia = 0;
        int rightDia = 0;

        for(int i = 0; i < row; i++) {
            leftDia += arr[i][i];
            rightDia += arr[i][row - 1 - i];
        } 

        

        System.out.println(Math.abs(leftDia - rightDia));
    }
}