#include <bits/stdc++.h>
using namespace std;
using ll = long long;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int h, w;
    cin >> h >> w;
    vector<string> A(h);
    vector<int> cnt(w);
    for(auto &&s : A){
        cin >> s;
        for(int x = 0; x < w; x++){
            cnt[x] += s[x] == 'o';
        }
    }
    int ans = 0;
    for(auto &&s : A){
        bool flg = false;
        for(int x = 0; x < w; x++){
            if(s[x] == 'o' && cnt[x] == 1){
                flg = true;
                break;
            }
        }
        ans += flg;
    }
    cout << ans << '\n';
}