Simple Calculation

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Stephen has an array A of non negative integers. He is not happy with the array since it has no signs ( i.e ' + ' or ' − ' symbols ). So he started to put ' + ' and ' − ' symbol in the array in the following manner : - puts ' + ' sign if the number A[i] is encountered first, else - puts ' − ' sign if A[i] is encountered second time , else - puts ' + ' sign if A[i] is encountered third time , els

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solution.cppC++17

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