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:
She waltzed across the floor.

Ex Output:
1


Ex Input:
What do you believe that iron is to be a fact well known to virtually everybody?

Ex Output:
0


Ex Input:
This violin is tough to play sonatas on.

Ex Output:

1