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: Lightning is ____ times hotter than the surface of the sun.

Output: three


Input: Consider Input: Parallel coordinates use ____ or more parallel axes.

Output: two


Input: Consider Input: Libraries serve at least ____ roles in learning.


Output: three