#include<iostream>
int main(){
  int n;
  std::cin>>n;
  std::cout<<(n%10==2||n%10==4||n%10==5||n%10==7||n%10==9?"hon"
             :n%10==0||n%10==1||n%10==6||n%10==8?"pon"
             :"bon")<<std::endl;
}