#include <iostream>
using namespace std;
int main() {
    int n; cin >> n;
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= i; j++)
            cout << '*';
        cout << endl;
    } for (int i = n; i >= 1; i--) {
        for (int j = 1; j <= n; j++)
            cout << " ";
        for (int j = 1; j <= n - i; j++)
            cout << " ";
        for (int j = 1; j <= i; j++)
            cout << '*';
        cout << endl;
    } return 0;
}