Lehmät

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.math.BigInteger;
import java.util.StringTokenizer;
 
public class B430 {
 
	public static void main(String[] args) {
		FastReader reader = new FastReader();
		PrintWriter writer = new PrintWriter(new OutputStreamWriter(System.out));
 
		int n = reader.nextInt();
		int m = reader.nextInt();
 
		int cows = 0;
		boolean inside = false;
 
		for (int i = 0; i < n; i++) {
			String row = reader.nextLine();
			
			if (!row.contains("*")) continue;
 
			for (int j = 0; j < m; j++) {
				char c = row.charAt(j);
				if (c == '.') continue;
 
				char prev = j == 0 ? 'x' : row.charAt(j - 1);
				char next = j + 1 == m ? 'x' : row.charAt(j + 1);
 
				if (c == '@' && inside) {
					cows++;
					continue;
				}
				if (c == '*') {
					if (!inside && (prev != '*') && (next != '*'))
						inside = true;
					else
						inside = false;
				}
			}
		}
 
		reader.close();
 
		writer.println(cows);
		writer.flush();
		writer.close();
	}
 
	static class FastReader {
 
		private BufferedReader br;
		private StringTokenizer st;
 
		public FastReader() {
			br = new BufferedReader(new InputStreamReader(System.in));
		}
 
		void close() {
			try {
				br.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
			st = null;
			br = null;
		}
 
		String next() {
			while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return st.nextToken();
		}
 
		String nextLine() {
			String str = "";
 
			try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			}
 
			return str;
		}
 
		int nextInt() {
			return Integer.parseInt(next());
		}
 
		BigInteger nextBigInteger() {
			return new BigInteger(next());
		}
 
		double nextDouble() {
			return Double.parseDouble(next());
		}
 
		long nextLong() {
			return Long.parseLong(next());
		}
 
	}
 
}

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