// 2692
#include <bits/stdc++.h>
using namespace std;

int N;
vector<string> S;

int check(int y, int x) {
  int ret = 0;
  if (S[y][x] != '.') return 0;
  // yoko
  auto T = S[y];
  T[x] = 'A';
  if (T == string(N, 'A')) ret++;
  // tate
  bool tate = true;
  for (int i = 0; i < N; i++) {
    if (i == y) continue;
    if (S[i][x] != 'A') {
      tate = false;
      break;
    }
  }
  if (tate) ret++;
  // \naname
  if (x == y) {
    bool naname1 = true;
    for (int i = 0; i < N; i++) {
      if (i == x) continue;
      if (S[i][i] != 'A') {
        naname1 = false;
        break;
      }
    }
    if (naname1) ret++;
  }
  // /naname
  if (x == N - 1 - y) {
    bool naname2 = true;
    for (int i = 0; i < N; i++) {
      if (i == x) continue;
      if (S[N-1-i][i] != 'A') {
        naname2 = false;
        break;
      }
    }
    if (naname2) ret++;
  }
  return ret;
}


int main() {  cin.tie(0)->sync_with_stdio(0);
  cin >> N;
  S.resize(N);
  for (auto&& s : S) cin >> s;

  int ans = 0;
  for (int i = 0; i < N; i++) {
    for (int j = 0; j < N; j++) {
      ans += check(i, j);
    }
  }
  cout << ans << endl;
  return 0;
}