Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.

Ex Input:
Substance abusers have ____ hundred percent higher medical costs and benefits.

Ex Output:
three


Ex Input:
Metamorphosis takes over ____ months and the froglets come out really small.

Ex Output:
five


Ex Input:
Lions typically kill and feed once every ____ days.

Ex Output:

four