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

int main() {
   int n,ans = 1,count = 0;
   cin >> n;
   char a[n][n];
   for(int i = 0; i < n; i++){
      for(int j = 0; j < n; j++){
         cin >> a[i][j];
      }
   }
   for(int i = 0; i < n; i++){
      if(a[0][i] == 'x') ans++;
      if(a[0][i] == 'o' || a[0][i] == '-') count++;
   }

   ans = ans - count;
   if(ans < 1) ans = 1;

   cout << ans << endl;

   return 0;
}