import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = a.substring(a.length()-1, a.length());
        switch(b) {
        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;
        default:
            break;
        }
    }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz