#include <iostream>

using namespace std;

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

    return 0;
}