#include <bits/stdc++.h>
using namespace std;
using ll=long long;
int main(){
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	int n;
	cin>>n;
	vector<string> s(n);
	for(int i=0;i<n;i++)cin>>s[i];
	int cur=0;
	while(cur<n*n&&s[cur/n][cur%n]=='.')cur++;
	ll ans=0;
	for(int i=0;i<n;i++)for(int j=n;j<2*n;j++){
		if(s[i][j]=='.'){
			int x=cur/(n),y=cur%(n);
			ans+=abs(x-i)+abs(y-j);
			//cout<<i<<" "<<j<<" "<<x<<" "<<y<<endl;
			cur++;
			while(cur<n*n&&s[cur/n][cur%n]=='.')cur++;
		}
	}
	cout<<ans<<endl;
}