Unreachable

There are $N$ people standing in a line. The $i$-th person from the left has a *strength* of $A_i$. It is guaranteed that $A_i = 1$ or $A_i = 2$ for each person. Suppose person $i$ is holding a ball. They can throw the ball to person $j$ **if and only if** $A_i$ divides $|i - j|$, i.e. if the strength of person $i$ divides the distance between persons $i$ and $j$. Your task is to find whether