import sys
import os

n = sys.argv[1]
n = n[-1]

if n == "2" or n == "4" or n == "5" or n == "7" or n == "9":
    print("hon")
elif n == "0" or n == "1" or n == "6" or n == "8":
    print("pon")
elif n == "3":
    print("bon")

sys.exit()
