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