#include <bits/stdc++.h>
using namespace std;
int main() {
    int n; cin >> n;
    int sx = n / 2, sy = n / 2;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++)
            if (abs(sx - i) + abs(sy - j) <= n / 2) cout << "*";
            else printf(" ");
        puts("");
    }
    return 0;
}