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

Input: Consider Input: THEM: hello. i'd like to trade you for some basketballs  YOU: i can give you both balls if i can have the rest?  THEM: that's a deal.  YOU: okay, thanks!

Output: Yes


Input: Consider Input: THEM: can i have the books and the balls please?  YOU: can i have the hats and we split the balls?  THEM: no, i have to have both balls if it has to make sense  YOU: are you sure?  THEM: yes  YOU: ok, i'll take the hats  THEM: deal.

Output: Yes


Input: Consider Input: THEM: i need the hat and books you can have the ball  YOU: sorry that wont work for me. i need the books and you can have the ball and hat  THEM: i have to have the hat and at least 2 books  YOU: sorry, looks like we wont be able to reach a deal  THEM: no deal  YOU: i agree. now to wait for the button  THEM: no deal  YOU: yep  THEM: no deal  YOU: agree.


Output: No


