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:
Sandy taught the children the alphabet, but only got as far as the letter `` r ''.

Ex Output:
1


Ex Input:
I lifted the book onto the table.

Ex Output:
1


Ex Input:
How brave they must believe that you are!

Ex Output:

1