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

Ex Input:
THEM: i'd like a book and a hat  YOU: deal.  THEM: cool..... i'll accept tht =)

Ex Output:
Yes


Ex Input:
THEM: i would like 2 books, you can have the rest  YOU: ok deal.

Ex Output:
Yes


Ex Input:
THEM: i need one of each  YOU: well they are all worth 2 points to me so you figure out how i get six points and then we can walk away from this happy.  THEM: okay, then i'll take the ball and one hat  YOU: well away we go.

Ex Output:

Yes


