int main(){
	int n;
  cin>>n;
  if(n%10==2 || n%10==4 ||n%10==5 ||n%10==7 ||n%10==9) cout<<"hon"<<endl;
  else if(n%10==0 || n%10==1 ||n%10==6 ||n%10==8 ) cout<<"pon"<<endl;
  else cout<<"bon"<<endl;
  return 0;
}
