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'.

Input: Consider Input: The students looked the high stairs up.

Output: 0


Input: Consider Input: How do you wonder whether John said Mary solved the problem?

Output: 0


Input: Consider Input: There tried to be riots in Seoul.


Output: 0