#include <iostream>

using namespace std;

int main() {
    int n;
    cin >> n;
    for (int i = 0; i < n * n; i++) cout << ((i / n == i % n || i / n == n - 1 - i % n) ? "*" : " ") << ((i % n == n - 1) ? "\n" : "");

    return 0;
}