You are given a review of Amazon's food products. Your task is to divide them into two classes: negative or positive, depending on the content of the review.

Example Input: Such an easy way to buy calorie controlled snacks.  The arrived quickly.  So easy to take to work or when you need just an easy snack.
Example Output: Positive

Example Input: I recieved a Keurig K-Cup Brewer for Christmas with sample cups of coffee and tea but no cocoa so I tried this brand and I like them but I haven't tried other brands yet to compare with. I would buy these again until I find one I like better.
Example Output: Positive

Example Input: This is by far the best K-cup hot cocoa we have tried.  It has a nice rich flavor and with the added convenience of a K-cup, it is easy to have a cup anytime you like. Highly recommend!
Example Output:
Positive