Weighted Sum

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Write a program that reads numbers until -1 is not given. The program finds how many of the given numbers are more than 30, $N$. It also finds the average weighted sum of even numbers, $A$. The weight of the $i$th number is defined as the position of the number (1 based indexing) times the number. To find the average weighted sum, you need to add all these weights for the even numbers, then

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solution.cppC++17

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