digit = input()

if digit == '0': print('zero')
elif digit == '1': print('one')
elif digit == '2': print('two')
elif digit == '3': print('three')
elif digit == '4': print('four')
elif digit == '5': print('five')
elif digit == '6': print('six')
elif digit == '7': print('seven')
elif digit == '8': print('eight')
elif digit == '9': print('nine')
else:
    print('not a digit')