CNUMBERS

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Codecheffers are crazy about numbers and games, especially number games! Two Codecheffers, Laurence and Seymour, have invented a new two-player game based on "cNumbers". A number is a cNumber if and only if the sum of the number's digits has no positive divisors other than 1 and itself. (In particular, note that 1 is a cNumber.) The game works as follows: First, someone who is not playing the g

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solution.cppC++17

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