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 witch went into the forest and thereby vanished.

Output: 1


Input: Consider Input: Mike will sing if you will sing.

Output: 1


Input: Consider Input: Every student who ever goes to Europe ever has enough money.


Output: 0