K Largest Unique Elements

Write a program that takes a list of integers and outputs the k largest unique elements. If there are fewer than k unique elements, return 'Not enough unique elements'. Input: - The first line contains two integers n (number of elements) and k (the required unique largest elements). - The second line contains n integers separated by spaces. Output: - A list of the k largest unique elements or 'Not enough unique elements'. Example: Input: 7 3 5 3 5 1 4 2 3 Output: [5, 4, 3]