Lehmät

import java.util.Scanner;
 
public class cows {
 
    public static void main(String[] args) {
 
        Scanner sc = new Scanner(System.in);
 
        int height = sc.nextInt();
        int width = sc.nextInt();
 
        sc.nextLine();
 
        int[] first = null;
        int[] last = new int[2];
 
        char[][] map = new char[width][height];
        for (int h = 0; h < height; h++) {
            String line = sc.nextLine();
            for (int w = 0; w < line.length(); w++) {
                //--
                char c = line.charAt(w);
 
                if (c == '*') {
                    if (first == null) {
                        first = new int[]{h, w};
                    }
                    last[0] = h;
                    last[1] = w;
                }
 
                map[w][h] = line.charAt(w);
 
            }
        }
 
        int count = 0;
        for (int h = first[0]+1; h < last[0]; h++) {
            for (int w = first[1]+1; w < last[1]; w++) {
                if(map[w][h] == '@') {
                    count++;
                }
            }
        }
 
        System.out.println(count);
 
    }
}

Test 1

Group: 1, 2

Verdict: ACCEPTED

Test 2

Group: 1, 2

Verdict: ACCEPTED

Test 3

Group: 1, 2

Verdict: ACCEPTED

Test 4

Group: 1, 2

Verdict: ACCEPTED

Test 5

Group: 1, 2

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED