Obtain Desired Standard Deviation

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Given two integers N and σ, find any array a with length N such that the standard deviation of the elements of the array is equal to σ. The standard deviation is given by the following formula: For each 1 ≤ i ≤ N, ai may be any real number with |ai| ≤ 108. If there is more than one possible answer, you may output any one of them. If there is no such array, output -1 instead. Please note that th

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solution.cppC++17

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