In this task, 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: Terrible customer service, at first my safe was supposed to arrive on the 5th, then It was the 8th, then the 14th, and now I'm being told I have to contact the shipping company to find where my order is??? DO NOT BUY FROM THESE PEOPLE. I also found out the they just bought it from Wal-Mart and had the shipping company pick it up. I could have just drove to Wal-Mart and bought it myself to save all this headache!
Example Output: negative

Example Input: Now we are living a bark free life! Within two days it had cut out 99% of non-essential barking! At last you can feel peace and quietness in our house! We love our beagles but they were driving us crazy! It really detects barking from far away, now we don’t even hear our neighbor dogs. Great quality and cute btw...This has been a life saver! We are able to get proper sleep now!
Example Output: positive

Example Input: Don't waste your time. You'll buy this product only to realize that you'll never receive it. The seller will not offer to replace it nor will they offer to refund you. All you'll get told is to check with USPS. Thanks for your very shitty customer service. I will never be buying any product of yours again.
Example Output:
negative