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

Input: Consider Input: THEM: i'd like the ball and 2 books.  YOU: deal.

Output: Yes


Input: Consider Input: THEM: i will take the basketball and book. you take the hats  YOU: i need ball  THEM: you take the ball and i will take the rest  YOU: ok.

Output: Yes


Input: Consider Input: THEM: i would like the book and 1 hat and 1 ball  YOU: i can not make that deal. i need the book and the hats you can have the balls  THEM: no can do i need the book and the balls if you want the hats  YOU: i need the book the most and at least one other item  THEM: yeah the book is really non negotiable. so if you won't budge on the book then there will be no deal  YOU: no deal.  THEM: no deal  YOU: no deal  THEM: no deal  YOU: no deal.


Output: No


