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:
Me gave it to him.

Ex Output:
0


Ex Input:
In the woods lives an old woman.

Ex Output:

1