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