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  1. import java.util.*;
  2.  
  3. public class Main{
  4.     public static void main(String args[]){
  5.         Scanner sc = new Scanner(System.in);
  6.  
  7.         int n = sc.nextInt();
  8.  
  9.         int a[][] = new int[n][n];
  10.         for(int i=0;i<n;i++){
  11.             for(int j=0;j<n;j++){
  12.                 a[i][j] = sc.nextInt();
  13.              }
  14.         }
  15.  
  16.         int sum = 0;
  17.  
  18.         for(int i=0;i<n;i++){
  19.  
  20.                 sum = sum + a[i][i] + a[i][n-i-1];
  21.             }
  22.  
  23.  
  24.         for(int j=n/2;j<n;j++){
  25.            sum += a[n/2][j];
  26.         }
  27.         for(int i=n/2;i<n;i++){
  28.            sum += a[i][n/2];
  29.         }
  30.  
  31.         sum -= 2 * a[n/2][n/2];
  32.  
  33.     System.out.println(sum);
  34.  
  35.     }
  36. }
Success #stdin #stdout 0.13s 54612KB
comments (?)
stdin
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5
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
stdout
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14
https://ideone.com/B4ZOZc
language:
Java (HotSpot 12)
created:
5 days ago
visibility:
public

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