#include "bits/stdc++.h" using namespace std; int main() { int n; cin >> n; for(int i = 1;i <= n;i++) { for(int j = 1;j <= n - i;j++) { cout << " "; } for(int j = 1;j <= i * 2 - 1;j++) { cout << "*"; } cout << endl; } for(int i = n - 1;i >= 1;i--) { for(int j = 1;j <= n - i;j++) { cout << " "; } for(int j = 1;j <= 2 * i - 1;j++) { cout << "*"; } cout << endl; } return 0; }