Given an integer array nums and two integers left and right, return the number of contiguous non-empty subarrays such that the value of the maximum array element in that subarray is in the range [left, right].
Example 1:
Input: 2 1 4 3 left: 2 right: 3 Output: 3 Explanation: Subarrays: [2], [2,1], [3].
Example 2:
Input: 2 9 2 5 6 left: 2 right: 8 Output: 7
Constraints:
- 1 ≤ nums.length ≤ 2 × 10⁴
- 0 ≤ nums[i] ≤ 10⁹
- 0 ≤ left ≤ right ≤ 10⁹
Input format: First line: space-separated array. Second line: left. Third line: right.
Output format: Count of subarrays.