1357. Apply Discount Every n Orders

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There is a supermarket that is frequented by many customers. The products sold at the supermarket are represented as two parallel integer arrays products and prices, where the ith product has an ID of products[i] and a price of prices[i]. When a customer is paying, their bill is represented as two parallel integer arrays product and amount, where the jth product they purchased has an ID of produc

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solution.cppC++17

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