Thermal Equilibrium Window

You are monitoring a chemical reactor's temperature sensor. Given a sequence of N temperature readings and a target equilibrium temperature T, find the length of the longest contiguous period where the average temperature was exactly T. If no such period exists, output 0. Input Format: The first line contains two integers: N (the number of readings) and T (the target average). The second line contains N space-separated integers representing the temperature readings. Output Format: A single integer representing the maximum length of a subarray whose mean is T. Example: Input: 5 3 2 4 3 3 3 Output: 5 Explanation: The average of [2, 4, 3, 3, 3] is 15/5 = 3. The entire array works.