Distinct Numbers

You are given a list of n integers, and your task is to calculate the number of distinct values in the list. Input The first input line has an integer n: the number of values. The second line has n integers x_1,x_2,\dots,x_n. Output Print one integers: the number of distinct values. Constraints - 1 \le n \le 2 \cdot 10^5 - 1 \le x_i \le 10^9 Example Input: 5 2 3 2 2 3 Output: 2