        import java.util.Scanner;
        public class Main{
        public static void main(String[] args){
        	Scanner scan  = new Scanner(System.in);
        	int n = scan.nextInt();
          	swith(n%10){
              case 2:
              case 4:
              case 5: 
              case 7:
              case 9:
                System.out.println("hon");
                break;
              case 0:
              case 1:
              case 6:
              case 8:
                      System.out.println("pon");
                      break;
              case 3:
                System.out.println("bon");
                break;
            }
          return 0;
          
        }
        }