using namespace std;

int main()
{int N,i,j,k;
    cin>>N;
    for (i = 1; i <= N; i++)
    {
        for (j = 1; j <= N - i; j++)
        cout << " ";
        cout<<"*";
        for ( j = 1; j <= 2*i - 2; j++)
        cout << " ";
        if (i!=1)cout<<"*";
        cout << endl;

    }
    for (i = N - 1; i >= 1; i--)
    { for (j = 1; j <= N - i; j++)
       cout << " ";
       cout<<"*";
       for (j = 1; j <= 2 * i - 2; j++)
       cout << " ";
       if (i!=1)cout<<"*";
       cout << endl;
    }

    return 0;
}