You will be given a sentence. Check whether the sentence is grammatically correct and is meaningful. If the sentence is grammatically correct, then answer with '1', otherwise answer with '0'.

Input: Consider Input: Carla hit Bill's back.

Output: 1


Input: Consider Input: The fence straddles the sidewalk.

Output: 1


Input: Consider Input: Sam didn't pick those packages up which are to be mailed tomorrow until it had stopped raining.


Output: 1