#include<bits/stdc++.h>
 
void main(){
  int n;
  cin>>n;
  if(n%10==2||n%10==4||n%10==5||n%10==7||n%10==9){
    cout<<"hon";
    return;
  }
  if(n%10==0||n%10==1||n%10==6||n%10==8){
    cout<<"pon";
    return;
  }
  if(n%10==3){
  cout<<"bon";
    return;
  }
  return;
	
}