import java.util.*;

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