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