In this task, you're given a review from Amazon's food products. Your task is to generate a rating for the product on a scale of 1-5 based on the review. The rating means 1: extremely poor, 2: poor, 3: neutral or mixed, 4: good, 5: extremely good. 

Ex Input:
Go to Costco, and you can buy lower than this  price per oz. Currently $32 ($3 off regular $34.99)+ tax for big size = 0.83$/oz.  Besides, it is more convinient to return if you kid does not like this formula  Be careful, many times some sellers over price a product, and still make the product rank in the best sellers.

Ex Output:
1


Ex Input:
These taste wonderful!  Guilt free if you can stop at one bag.  Will definitly buy again!

Ex Output:
5


Ex Input:
keebler townhouse olive oil crackers taste OK but are a waste of money when 80% of minicrackers are broken into 1" pieces

Ex Output:

2