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:
John scratched his arm and Mary did too.

Ex Output:
1


Ex Input:
Fluffy is sick, which it is certain that no one here realizes.

Ex Output:
1


Ex Input:
The crowd vanished.

Ex Output:

1