import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
      Scanner scan = new Scanner(System.in);
      int n = scan.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");
      }
	}
}