Distinct Values Queries II

Given an array of n integers, your task is to process q queries of the following types: - update the value at position k to u - check if every value in range [a, b] is distinct Input The first line has two integers n and q: the number of values and queries. The second line has n integers x_1, x_2,\dots, x_n: the array values. Finally, there are q lines describing the queries. Each line has t