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:
Mary laughed at John.

Ex Output:
1


Ex Input:
The policeman met several young students in the park last night.

Ex Output:
1


Ex Input:
In the box put John the book.

Ex Output:

0