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'.

Ex Input:
Smith threw the first base the ball.

Ex Output:
0


Ex Input:
A proof was given that the claim that John had lied had been made.

Ex Output:
1


Ex Input:
Did he try to ever be attentive to the needs of students?

Ex Output:

1