import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String N = sc.next();
        sc.close();

        switch (N.charAt(N.length() - 1)) {
            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;
        }
    }
}

/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