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:
Most guests will be offended if we don't invite some philosopher.

Ex Output:
1


Ex Input:
Here is the snowball which I chased the boy who threw at our teacher.

Ex Output:
0


Ex Input:
Who had Poseidon run away, because the executioner murdered?

Ex Output:

0