#include <bits/stdc++.h>
using namespace std;

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