Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
One 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 is here: No
Explanation: Both participants do not agree to the deal, so the answer is No.

Now, solve this: THEM: ill give you the books if i can have everything else YOU: no deal. i'll take ball and 2 books? THEM: no deal. i can give you 4 books thats it YOU: can't do. books are 1 point for me. i can do the hat and all books. THEM: nope no deal books are worth nothing for me YOU: then we just need to talk till the no deal button pops up. i don't deal for less than 5 / 10. THEM: good for you YOU: books are sucky anyway. THEM: cool story YOU: blah blah blah no deal.
Solution:
No