Good Subarrays

An array $A$ is called good if the following condition holds: - For each index $i$ and for each value $x$ such that $1 \le x < A_i$, there should exist an index $j$ satisfying the following: - $1 \le j < i$ - $A_j = x$ For example, $[1, 2, 3, 4]$ and $[1, 1, 2, 1, 2, 3, 4]$ are good but $[2]$ and $[1, 2, 4]$ are not. --- You are given an array of $N$ integers. Find the number of subarra