Mean and Median

Chef has two numbers $X$ and $Y$. Chef wants to find three integers $A, B,$ and $C$ such that: - $-1000 \le A, B, C \le 1000$ - $mean([A, B, C]) = X$ - $median([A, B, C]) = Y$ Can you help Chef find such three integers? As a reminder, $mean([P, Q, R]) = \frac{P + Q + R}{3}$ and $median([P, Q, R])$ is the element at the $2^{nd}$ (middle) position after we sort $[P, Q, R]$ in non-decreasing order.