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:
Suddenly an ugly old man entered the hall.

Ex Output:
1


Ex Input:
Seems John to fix the computer.

Ex Output:
0


Ex Input:
It was last night that the policeman met several young students in the park.

Ex Output:

1