Good Array

Given, an array $[a$1$ , a$2$ , . . . , a$n$]$ of size n consisting of negative integers including zero. The array is called ***good*** if there exists 1 ≤ k ≤ n such that, the elements of the array are monotonically decreasing up to the kth element of then monotonically increasing after the kth element i.e. $∀ 1 ≤ i ≤ k-1, a$i$ i+1$, and, ∀ k ≤ i ≤ n-1, a$i$ > a$i+1. We can perform the followi