Teacher: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Teacher: Now, understand the problem? If you are still confused, see the following example:
THEM: i need the hats and the ball  YOU: i can give you one hat and the ball. i want 2 books and 1 hat  THEM: i have to have both hats and the ball or both hats and a book to make a deal  YOU: sorry, i won`t make a deal without a hat  THEM: if you take 1 hat i have to have everything else  YOU: sorry can`t do  THEM: no deal  YOU: yesh no deal, sorry  THEM: no deal  YOU: no deal.
Solution: No
Reason: Both participants do not agree to the deal, so the answer is No.

Now, solve this instance: THEM: im not much of a reader so im thinking books for you, hats and ball for me  YOU: but basketball is my favorite sport, so i was hoping for the basketball and both hats.  THEM: oh no. id be willing to give away one hat for one book, but i must have the basketball. bball, a book and a hat for me?  YOU: if i give up the ball, i would need both hats.  THEM: ok, but then i get both books  YOU: deal.
Student:
Yes