Chef and Numbers

CodeChefRating 1477Open on judge ↗

Chef likes problems related to numbers a lot. He is generally quite good at solving these kinds of problems, but today he got stuck at one number theory problem, and so he asks your help to solve it. Given a positive integer N, find out how many positive integers X satisfy the equation X + S(X) + S(S(X)) = N, where S(X) denoting sum of digits of X in decimal (base 10) representation. Input The

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solution.cppC++17

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