#include <iostream>

using namespace std;

int n, m, v[101];

void citeste () {
    cin>>n>>m;
    char a;
    for (int i=1; i<=n; i++)
        for (int j=1; j<=m; j++) {
            cin>>a;
            if (a == '.') v[j] = v[j] | 1;
            else v[j] = v[j] | 0;
        }
}

void rezolva () {
    int sol = 0;
    for (int i=1; i<=m && v[i]; i++) sol++;
    sol = sol + n-1;
    cout<<sol;
}

int main () {
    citeste ();
    rezolva ();
    return 0;
}