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

//* ATCODER
#include<atcoder/all>
using namespace atcoder;
typedef modint998244353 mint;
//*/

/* BOOST MULTIPRECISION
#include<boost/multiprecision/cpp_int.hpp>
using namespace boost::multiprecision;
//*/

typedef long long ll;

#define rep(i, s, n) for (int i = (int)(s); i < (int)(n); i++)
#define rrep(i, s, n) for (int i = (int)(n)-1; i >= (int)(s); i--)

template <typename T> bool chmin(T &a, const T &b) {
	if (a <= b) return false;
	a = b;
	return true;
}

template <typename T> bool chmax(T &a, const T &b) {
	if (a >= b) return false;
	a = b;
	return true;
}

template <typename T> T max(vector<T> &a){
	assert(!a.empty());
	T ret = a[0];
	for (int i=0; i<(int)a.size(); i++) chmax(ret, a[i]);
	return ret;
}

template <typename T> T min(vector<T> &a){
	assert(!a.empty());
	T ret = a[0];
	for (int i=0; i<(int)a.size(); i++) chmin(ret, a[i]);
	return ret;
}

template <typename T> T sum(vector<T> &a){
	T ret = 0;
	for (int i=0; i<(int)a.size(); i++) ret += a[i];
	return ret;
}

int main(){
	int n; cin >> n;
	vector s(n, vector<char>(n));
	rep(i,0,n) rep(j,0,n) cin >> s[i][j];

	int ans = 0;
	auto check = [&]() -> void {
		rep(i,0,n){
			bool mode = 1;
			rep(j,0,n){
				if (s[i][j] != 'A') mode = 0;
			}
			if(mode) ans++;
		}

		rep(j,0,n){
			bool mode = 1;
			rep(i,0,n){
				if (s[i][j] != 'A') mode = 0;
			}
			if (mode) ans++;
		}
		{
			bool mode = 1;
			rep(i,0,n){
				if (s[i][i] != 'A') mode = 0;				
			}
			if(mode) ans++;
		}
		{
			bool mode = 1;
			rep(i,0,n){
				if (s[i][n-1-i] != 'A') mode = 0;
			}
			if (mode) ans++;
		}
		return;
	};

	rep(i,0,n){
		rep(j,0,n){
			if (s[i][j] == '.'){
				s[i][j] = 'A';
				check();
				s[i][j] = '.';
			}
		}
	}
	cout << ans << '\n';
}