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:
They pushed through the crowd.

Ex Output:
1


Ex Input:
The stone carved.

Ex Output:
0


Ex Input:
They said nobody would pay up, but pay up I know a boy who did.

Ex Output:

0