Divisible Subset

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You are given a multiset of N integers. Please find such a nonempty subset of it that the sum of the subset's elements is divisible by N. Otherwise, state that this subset doesn't exist. Input The first line of the input contains an integer T denoting the number of test cases. The description of T test cases follows. The first line of each test consists of a single integer N - the size of the

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solution.cppC++17

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