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:
Paula hit at the fence.

Ex Output:
1


Ex Input:
Fred threw the ball behind the tree.

Ex Output:
1


Ex Input:
Harry thinks that Sally is innocent, although no one else thinks so.

Ex Output:

1