Imagine you have an e-shop with discounts. Discounts are provided as coupons. Coupons can be of 3 types: 1) deduct percent of price from the current item 2) deduct percent of price from the next item 3) deduct an exact sum in dollars from N next items Imagine you have a shopping cart with some items in it and some coupons (of the types above). Write a program that will calculate final price of the order (after applying all coupons). Order of coupons application matters. Each type of coupon may appear from zero to infinite times.
