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:
After ten had left, seven more soldiers came in.

Ex Output:
1


Ex Input:
Paula swatted Deirdre's back.

Ex Output:
1


Ex Input:
The higher the stakes are, the lower his expectations are.

Ex Output:

1