# Leetcode 1357 Apply discount every n orders

In this Leetcode problem, we are asked to return the cost of different orders, knowing that we apply a discount every `n`

customers. Here is the problem statement:

There is a sale in a supermarket, there will be a

`discount`

every`n`

customer.

There are some products in the supermarket where the id of the`i-th`

product is`products[i]`

and the price per unit of this product is`prices[i]`

.

The system will count the number of customers and when the`n-th`

customer arrive he/she will have a`discount`

on the bill. (i.e if the cost is`x`

the new cost is`x - (discount * x)`

…