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:
Mary has never kissed a man who is taller than John.

Ex Output:
1


Ex Input:
Tabs were kept on all persons entering the station.

Ex Output:
1


Ex Input:
I pushed on the table.

Ex Output:

1