Retrieve the Array

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Chef has an array $A$ of length $N$. Let $f(i)$ denote the sum $A_1 + A_2 + \dots + A_i \,$ and let $g(i)$ denote the sum $A_i + A_{i + 1} + \dots + A_N$. Chef creates another array $B$ of length $N$ such that $B_i = f(i) + g(i)$ for all $1 \leq i \leq N$. Now, Chef has lost the original array $A$ and needs your help to recover it, given array $B$. It is guaranteed that Chef has obtained the a

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solution.cppC++17

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