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:
Although Bob may not be a nut, many people have claimed and I think so too.

Ex Output:
0


Ex Input:
The children wails

Ex Output:
0


Ex Input:
It is this hat that I believe that he was wearing.

Ex Output:

1