Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.

Ex Input:
THEM: book and balls to me  YOU: i can't do that. i can give you one of the balls, and both hats if that's acceptable.  THEM: one book and one ball to me, you have rest  YOU: ok, that's fair enough to me. deal.

Ex Output:
Yes


Ex Input:
THEM: hello i would like the ball, the hat, and 2 books.  YOU: no. how about i get the ball and you get the rest.  THEM: no. i will take the ball and 1 book.  YOU: no it has to be even. i'll take the ball and you get everything else. that seems fair.  THEM: i will take the ball and no books.  YOU: you must be seeing different values than me. i want the ball.  THEM: then it seems we have reached an impasse.

Ex Output:
No


Ex Input:
THEM: you can have two books  YOU: how about i take all the books and you take the rest?  THEM: you can have one book and one ball  YOU: how about i get two books and the hat and you get the rest?  THEM: how about i take the hat and the balls  YOU: ok, deal.

Ex Output:

Yes


