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:
The message was that you should come on time.

Ex Output:
1


Ex Input:
I don't know the people present.

Ex Output:
1


Ex Input:
The sign warned us against skating on the pond.

Ex Output:

1