write in c++, do not use any libraries except algorithm library, make sure it works in all cases not only the example.

A company ABC requires to use an online server for research experimentation for a certain number of days. The server will be used on certain days but not every day. To use an online server, the company is required to subscribe to a cloud provider. A cloud provider offers 3 subscriptions options: 1-day subscription, a 1-week subscription, or a 30-day subscription, each one of them has a price that can be found in a given array of prices, where prices [0] represents the price of a 1-day subscription, prices [1] represents the price of a 1-week subscription, and prices [2] represents the price of a 30-days subscription. Write a function Minsubscription to find the minimum amount of money that company ABC needs to have in order to use a server during all the experimentation days. Your function Minsubscription takes as parameters 3 values: E which represents the number of experimentation days. Days which has E integer values that represent the experimentation days Di where 1