Compute Minimum Production Days

You are given a list of product IDs `products`, where `products[i]` is the product that must be produced at step `i`, and an integer `space` representing a required cooling period. Rules: - You can produce at most one product per day. - The products must be produced in the given order. - After producing a product with ID `x`, you must wait at least `space` full days before producing product `x` again. - During waiting days, you may either produce other products (if they are next in order and valid to produce) or stay idle. Write a function that returns the minimum number of days needed to produce all products. Example: - `products = [1, 3, 1, 3, 2]` - `space = 2` Output: - `6` Explanation: - Day 1: produce `1` - Day 2: produce `3` - Day 3: idle - Day 4: produce `1` - Day 5: produce `3` - Day 6: produce `2` So the minimum total number of days is `6`.