Alice Potter and OWL

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Alice Potter's fifth year at Hogwarts is coming to an end, which means it's time for the important OWL exam. Help Alice pass the OWL in numerology, the science of numbers, and operations on them. The exam paper contains a sequence $A$ of $N$ integers. There are two types of tasks: - Given $i$ and $X$, set $A_i$ equal to $X$. - Given integers $L$ and $R$ $(1 \leq L \leq R \leq N)$, find $X$ and

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solution.cppC++17

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