Books And Pages

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Chef is very fond of reading programming books. So he decided to make his own collection of programming books. Initially in his room, there is one shelf which consists of $N$ books. The total number of pages in $N$ books is equal to the total number of permutations of $N$ books. After every year his collection becomes $N$ times of last year. So after $N$ years Chef decided to go through his co

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solution.cppC++17

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