#include <bits/stdc++.h>

using namespace std;

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    int n;
    cin >> n;

    char a[n][n];
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < n; ++j) {
            a[i][j] = ' ';
        }
    }

    for (int i = 0; i < n; ++i) {
        a[0][i] = '*';
        a[i][0] = '*';

        a[n - 1][i] = '*';
        a[i][n - 1] = '*';

        a[i][i] = '*';
        a[i][n - 1 - i] = '*';
    }

    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < n; ++j) {
            cout << a[i][j];
        }
        cout << "\n";
    }
}