N Special Cards

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Alisha has n special cards. Each individual card is either red or blue. Sunil wants to buy them immediately from Alisha. To do this, he needs to play a game with Alisha. This game takes some number of turns to complete. On a turn, Sunil may do one of two things: • Collect tokens: Sunil collects 1 red token and 1 blue token by choosing this option (thus, 2 tokens in total per one operation). •

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solution.cppC++17

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