import java.util.*;
class Main{
 public static void main(String[] args){
  Scanner sc = new Scanner(System.in);
   long n = sc.nextLong();
   long t = n%10;
   if(t==3)
     System.out.println("bon");
   else if(t==0 || t==1|| t==6||t==8)
     System.out.println("pon");
   else
     System.out.println("hon");
   
 }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz