#include <iostream>
#include <cmath>
using namespace std;
int main()
{
int n;
cin >> n;
for (int i = 0; i < n; i ++ )
{
for (int j = 0; j < n; j ++ )
{
int cx = n / 2, cy = n / 2;
if (abs(i - cx) + abs(j - cy) <= n / 2) cout << '*';
else cout << ' ';
}
cout << endl;
}
return 0;
}