#include <iostream>

using namespace std;

int main() {
    int n;
    cin >> n;
    //上面
    for (int i = n; i > 1; i--) {
        for (int j = 0; j <= n - i; j++)cout << " ";
        cout << "*";
        for (int j = 0; j < 2 * i - 1; j++)cout << " ";
        cout << "*" << endl;
    }
    //下面
    for (int i = 1; i <= n; i++) {
        for (int j = 0; j < n + 1; j++)cout << " ";
        cout << "*" << endl;
    }
    return 0;
}