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