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:
All Mr Collins has done is have praised Lady de Bourg.

Ex Output:
0


Ex Input:
A solution presented itself yesterday.

Ex Output:
1


Ex Input:
I demand that the more John eats, the more he pays.

Ex Output:

1