A drawing game

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For a non-empty array $C$ containing positive integers, let $B$ be a [subsequence](https://en.wikipedia.org/wiki/Subsequence) of array $C$ of size $M$ $(1 \leq M \leq |C|)$. We are going to play a drawing game based on the sequence $B$: - Select $M$ points with **positive integer coordinates** on the $XY$ $-$ plane such that the points $(B_i, 0)$, $(0, B_i)$ and the $i^{th}$ selected point are [c

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solution.cppC++17

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