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:
Who did Athena introduce who to?

Ex Output:
0


Ex Input:
The coat which a girl came in who had worn was torn.

Ex Output:
0


Ex Input:
Mira blamed the accident on Terry.

Ex Output:

1