Needful Things

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Bala's room is in a mess. He's been so busy doing research that he hasn't bothered to clean out his room for months. Now he has decided to sort out all the items in his room and keep only the essential ones. He knows the usefulness of each of the 'N' items that he has, and wants to keep only the 'K' most useful items. Bala is also very forgetful, so he wants a procedure that doesn't require him to

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solution.cppC++17

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