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.

Input: Consider Input: International mail consists of ____ categories of mail.

Output: three


Input: Consider Input: Hares hold their young ____ to ten days longer.

Output: seven


Input: Consider Input: Seahorses are small fish with a life span of one to ____ years.


Output: five