import java.util.*;

public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
  	int n=sc.nextInt();
    if(n%10==3){
      System.out.println("bon");
    }else if(n%10==0||n%10==1||n%10==6||n%10==8){
      System.out.println("pon");
    }else{
      System.out.println("hon");
    }
  }
}