IRON MAN AND NATURAL NUMBER

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Once day Pepper Potts agreed to go on date with our Iron Man, The Tony Stark. But, this time Pepper had one condition for Tony. Tony has to solve a puzzle given by Pepper, gives two numbers L and O and defines a set V. V = {x : x is a natural number ≤ L } (i.e.), V = {1,2,3,4,5, 6, ... , L} Tony has to find the total number of pairs of elements V[i] and V[j] belonging to the given set, such that

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solution.cppC++17

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