import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int A = Integer.parseInt(sc.next()); 
    int B = A % 10;
    if(B==3){
      System.out.println("bon");
    }else if(B==0 || B==1 || B==6 || B==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