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