#include <iostream> using namespace std; int main() { int n; char c; cin>>n; int s=2*n-1; for (int i=1;i<=s;i++) { int a, b; if (i<=n) { a=2*(n-i+1)-1; b=i-1; } else { a=2*(i-n+1)-1; b=s-i; } for (int s=0;s<b;s++) { cout<<" "; } for (int t=0; t<a; t++) { cout<<"*"; } cout<<endl; } return 0; }