import java.util.Scanner; public class sum { public static int arraysum(int [][]arr,int n) { int left =0; int right =0; int abs=0; for(int I=0;I<arr.length;I++) { for(int J=0;J<arr.length;J++) { if (I==J) left+=arr[I][J]; if (I+J==n-1) right+=arr[I][J]; } } abs=left-right; return abs; } public static void main(String []args) { Scanner input =new Scanner (System.in); int n; n=input.nextInt(); int[][]ARR=new int[n][n] ; for (int i=0;i<n;i++) { for (int j=0;j<n;j++) { ARR[i][j]=input.nextInt(); } } System.out.print(Math.abs(arraysum(ARR,n))); }
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