Party

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Atsi and Shaka have been invited to the birthday party of their friend Abed. $N$ people were invited to the party and were given seat numbers.(All seats are in the same row). Since Atsi and Shaka weren't given their seat numbers beforehand they decided to calculate the probability of them being allotted adjacent seats. They calculated the probability to be $P/Q$. Since Atsi and Shaka like pl

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solution.cppC++17

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