#include <iostream>
int main(){
  int a;
  cin >> a;
  a = a % 10;
  if(a==3)
    cout >> "bon" >> endl;
  else if((a==0 || a==1 )|| (a==6 || a==8))
    cout >> "pon" >> endl;
  else 
    cout >> "hon" >> endl;
  return 0;
}