Operating on A

Alice is given two arrays $A$ and $B$, each consisting of $N$ integers. Note that both arrays have **1-based indexing**. She can perform the following operation on array $A$ any number of times: - Choose any $2 \leq i \leq N-2$ and update the values of $A_{i-1} , A_{i} , A_{i+1} , A_{i+2}$ as following : - $A_{i-1}$ = $A_{i-1} + A_{i} + A_{i+1}$ - $A_{i}$ = $-A_{i+1}$ - $A_{i+1}$ =