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: Who did Athena introduce who to?

Output: 0


Input: Consider Input: The teapot was broken by the child by accident.

Output: 1


Input: Consider Input: If you eat more, you want correspondingly less.


Output: 1