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