N = input()

try:
	if 0 <= int(N) <= 999:
      if N[-1] is '2' or '4' or '5' or '7' or '9':
        print('hon')
      elif N[-1] is '0' or '1' or '6' or '8':
        print('pon')
      elif N[-1] is '3':
        print('bon')
except ValueError:
  exit()
