#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define rng(i,c,n) for(int i=c;i<n;i++)
#define fi first
#define se second
#define pb push_back
#define all(a) a.begin(), a.end()
#define sz(a) ((int) a.size())
#define vec(...) vector<__VA_ARGS__>
#define _4ab8goq ios::sync_with_stdio(0),cin.tie(0);
typedef long long ll;
typedef vector<int> vi;
typedef pair<int,int> pii;
void print(){cout<<'\n';}
template<class h,class...t>
void print(const h&v,const t&...u){cout<<v<<' ',print(u...);}

void slv(){
	int n;
	cin>>n;
	vec(string) a(n);
	rep(i,n){
		cin>>a[i];
	}
	int ans=0;
	rep(i,n){
		rep(j,n){
			if(a[i][j]=='.'){
				a[i][j]='A';
				// int pok=0;
				{
					int fnd=0;
					rep(k,n){
						if(a[k][j]!='A'){
							fnd=1;
						}
					}
					if(!fnd) ans+=1;
				}
				// if(i==2 and j==0) print(pok);
				{
					int fnd=0;
					rep(k,n){
						if(a[i][k]!='A'){
							fnd=1;
						}
					}
					if(!fnd) ans+=1;
				}
				{
					int cnt=0;
					rng(ad,-n,n+1){
						if(i+ad<n and j+ad<n and a[i+ad][j+ad]=='A') cnt+=1;
					}
					if(cnt==n) ans+=1;
				}
				{
					int cnt=0;
					rng(ad,-n,n+1){
						if(i-ad<n and j+ad<n and a[i-ad][j+ad]=='A') cnt+=1;
					}
					if(cnt==n) ans+=1;
				}
				a[i][j]='.';
			}
		}
	}
	cout<<ans<<"\n";
}

signed main(){
_4ab8goq;
	slv();
}