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:
Tabs were kept on all persons entering the station.

Ex Output:
1


Ex Input:
He attributed the fire to a short circuit.

Ex Output:
1


Ex Input:
The problem disappeared the accusation.

Ex Output:

0