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