Average Chef

The Quark organizing team loves to play around with numbers, sums and averages. The programming head, Chef, is working on a task to generate a sequence of numbers satisfying some conditions but is struggling to do so. Given two numbers $n$ and $k$ such that $n$ is divisible by $k$, he wants to produce an array $a$ ($1 \leq a_i \leq 10^9$) of $n$ ***distinct numbers*** such that if the array is d