Help Mr Shadi to find the cost

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Drawing ER diagrams is a very crucial and hectic part of any Software project, but what more hectic is to review them. Monal is a new entry to this reviewing system and thus wants to know how much time and energy he'll have to invest in order to review all the ER diagrams. Monal has a class of N number of groups. Each group prepares 1 ER diagram. It is well known that an ER diagram consists of

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solution.cppC++17

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