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