Around The Planets

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The company, SpaceX has discovered a new galaxy system, JuicyWay. JuicyWay has a big star and $N$ planets around the star. Each planet has a type Ai associated with it . SpaceX decides to launch a space tour program in JuicyWay. Two tours are unique if the type of ith planet visited by the two tours are not the same for any i<=$N$. Each tour must not visit a planet more than once. The type of to

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solution.cppC++17

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