#include <iostream>

using namespace std;

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

    int x = (n + 1) / 2, y = (n + 1) / 2;
    for (int i = 1; i <= n; i++)
    {
        for(int j = 1; j <= n; j++)
        {
            if(abs(j - x) + abs(i - y) < x) cout << "*";
            else cout << " ";
        }
        if(i != n) cout << endl;
    }

    return 0;
}