import java.util.Scanner;
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");
        }
    }
}