Behaviour of raw_input()
raw_input returns a string. So use int(raw_input()).
And for how string and int comparsions work, look here.
See the answer here.
Basically you're comparing apples and oranges.
>>> type(0) < type('10')
True
>>> 0 < '10'
True
>>> type(0) ; type('10')
<type 'int'>
<type 'str'>