9.DigitToWord

digit = input()

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