import java.util.Scanner;

class Therefore {
    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");
        }

        scan.close();
    }
}