#include <iostream>
using namespace std;

int main()
{
    int n;

    cin >> n;

    for (int i = 1; i <= (2 * n - 1) / 2 + 1; ++i)
    {
        for (int j = 1; j <= i; ++j)
            cout << ' ';
        for (int i = 1; i <= n; ++i)
            cout << '*';
        cout << '\n';
    }

    for (int i = (2 * n - 1) / 2; i >= 1; --i)
    {
        for (int j = 1; j <= i; ++j)
            cout << ' ';
        for (int i = 1; i <= n; ++i)
            cout << '*';
        cout << '\n';
    }

    return 0;
}