#include <iostream>

using namespace std;

int main()
{
    int n;
    cin >> n;

    for (int i = 0;i < n; ++i)
    {
        for (int j= 0; j < n; ++j)
        {
            if (abs(i-n/2)+abs(j-n/2) <=n/2) cout << "*" ;
            else cout << " ";
        }
        cout << endl;
    }
}