#include<iostream>
using namespace std;
int main() {
int n;
cin >> n;
int cx = n / 2, cy = n / 2;//曼哈顿中心
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
if (abs(i - cx) + abs(j - cy) <= n / 2) {
cout << "*";
}
else {
cout << " ";
}
cout << endl;
}
}
return 0;
}