SWEA 2805 농작물 수확하기 D3 (자바 Java)

import java.util.Scanner;
import java.io.FileInputStream;
 
class Solution
{
    public static void main(String args[]) throws Exception
    {
        Scanner sc = new Scanner(System.in);
        int T;
        T=sc.nextInt();
 
        for(int test_case = 1; test_case <= T; test_case++)
        {
            int N = sc.nextInt();
            int[][] farm = new int[N][N];
            int total = 0;
 
            for (int i = 0; i < N; i++) {
                String row = sc.next();
                for (int j = 0; j < N; j++) {
                    farm[i][j] = row.charAt(j) - '0';
                }
            }
             
            int center = N / 2;
            for (int i = 0; i < N; i++) {
                int distance = Math.abs(center - i);
                for (int j = distance; j < N - distance; j++) {
                    total += farm[i][j];
                }
            }
            System.out.println("#" + test_case + " " + total);
        }
        sc.close();
    }
}