import java.util.Scanner;

public class Main{

        static int n,m,cnt;

        static final int N=105;

        static char map[][]=new char[N][N];

        static int dx[]={0,0,1,-1, 1,-1,1,-1};

        static int dy[]={1,-1,0,0,1,-1,-1,1};

        static void dfs(int x,int y){

                if(map[x][y]=='@'){

                        map[x][y]='*';

                }

                for(int i=0;i<8;i++){

                        int xx=x+dx[i];

                        int yy=y+dy[i];

                        if(xx<0 ||yy<0 ||xx>=n ||yy>=m) continue;

                        if(map[xx][yy]=='*') continue;

                        dfs(xx,yy);

                }

        }

        public static void main(String[] args) {

                Scanner scan=new Scanner(System.in);

                while(scan.hasNext()){

                        n=scan.nextInt();

                        m=scan.nextInt();

                        if(n==0 && m==0) break;

                        for(int i=0;i<n;i++){

                                map[i]=scan.next().toCharArray();

                        }

                        cnt=0;

                        for(int i=0;i<n;i++)

                            for(int j=0;j<m;j++)

                                if(map[i][j]=='@'){

                                        dfs(i,j);

                                        cnt++;

                                }

                        System.out.println(cnt);

                }

        }

}