#include "cstdio"

#include "cstring"

#include "iostream"

#include "string"

using namespace std;

int n,m,map[][],vis[][],dir[][]={-,,,,,-,,,-,-,-,,,-,,},ans;

void dfs(int x,int y)

{

    vis[x][y]=ans;

    for(int s=;s<;s++)

    {

        int X=x+dir[s][],Y=y+dir[s][];

        if(vis[X][Y]||X<||X>n||Y<||Y>m||!map[X][Y]) continue;

        dfs(X,Y);

    }

}

int main()

{

    //freopen("in.txt","r",stdin);

    ios::sync_with_stdio(false);

    string tt;

    while(cin>>n>>m&&n)

    {

        memset(vis,,sizeof(vis));

        ans=;

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

        {

            cin>>tt;

            for(int j=;j<tt.size();j++)

            {

                if(tt[j]=='*') map[i][j+]=;

                if(tt[j]=='@') map[i][j+]=;

            }

        }

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

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

             if(map[i][j]&&!vis[i][j]) {ans++;dfs(i,j);}

        cout<<ans<<endl;

    }

}