#include <iostream>
#include <fstream>
using namespace std;

int main()
{
ifstream cin ("DATA1.txt");
ofstream cout ("OUT1.txt");
int t=5,n,n2,a,b;
while (t--)
{
cin >> n;
n2=n/2;
for (a=0; a<n2; a++)
{
 for (b=a; b<n2; b++)
  cout << '.';
 for (b=0; b<a*2+1; b++)
  cout << "#";
 for (b=a; b<n2; b++)
  cout << '.';
cout << endl;
}
for (a=0; a<n; a++)
 cout << '#';
cout << endl;
for (a=n-1; a>=0; a--)
{
 for (b=a; b<n; b++)
  cout << '.';
 for (b=0; b<a*2-1; b++)
  cout << "#";
 for (b=a; b<n; b++)
  cout << '.';
cout << endl;
}
}
return(0);
}