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

char C[33][33];
bool vis[33][33];
int n;
bool inrange(int x, int y) { return x >= 0 && x < n && y >= 0 && y < n; }

void f(int x, int y) {
  // 从当前位置出发，遍历四个方向
  vis[x][y] = 1;
  // 往下
  int nx = x + 1, ny = y;
  while (inrange(nx, ny) && C[nx][ny] == '.') vis[nx++][ny] = 1;
  // 向上
  nx = x - 1, ny = y;
  while (inrange(nx, ny) && C[nx][ny] == '.') vis[nx--][ny] = 1;
  // 向左
  nx = x, ny = y - 1;
  while (inrange(nx, ny) && C[nx][ny] == '.') vis[nx][ny--] = 1;
  // 向右
  nx = x, ny = y + 1;
  while (inrange(nx, ny) && C[nx][ny] == '.') vis[nx][ny++] = 1;
}

int main() {
  cin >> n;
  for (int i = 0; i < n; i++)
    for (int j = 0; j < n; j++) cin >> C[i][j];
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < n; j++) {
      if (C[i][j] == '*') f(i, j);
    }
  }
  int ans = 0;
  for (int i = 0; i < n; i++)
    for (int j = 0; j < n; j++)
      if (vis[i][j]) ans++;
  cout << ans;
  return 0;
}