 import java.util.*;
class Solution{
  public static void main(String dsf[]){
    
    	Scanner s=new Scanner(System.in);
    	int n=s.nextInt();
    n=n%10;
    
    if( n==2 || n==4 || n==5 || n==7 || n==9){
      System.out.println("hon"); }
     if( n==0 || n==1 || n==6 || n==8 ){
      System.out.println("pon"); }
     if( n==3 ){
      System.out.println("bon"); }
    
  }}