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