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:
Did Merv show up and did you play chess?

Ex Output:
1


Ex Input:
John is prouder of having gone than nobody expected me to believe he would be.

Ex Output:
0


Ex Input:
Mary is often running the marathon.

Ex Output:

1