import java.io.*;
import java.util.Scanner;

class Main
{
  public static void main(String[] args)
  {
    Scanner scan = new Scanner(System.in);
    int num1 = scan.nextInt();
    num1 = num1 % 10;
    if((num1 == 2)||(num1 == 4)||(num1 == 5)||(num1 == 7)||(num1 == 9))
      System.out.println("hon");
    if((num1 == 3))
      System.out.println("bon");
    if((num1 == 0)||(num1 == 1)||(num1 == 6)||(num1 == 8))
      System.out.println("pon");
  };
};
    
/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