n = str(input())

if n[-1] == '2' or n[-1] == '4' or n[-1] == '5' or n[-1] == '7' or n[-1] == '0':
    print('hon')
elif n[-1] == '0' or n[-1] == '1' or n[-1] == '6' or n[-1] == '8':
    print('pon')
else:
    print('bon')