import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        String[] s = sc.nextLine().split(" ");

        int matches = 0;
        if (s[0].equals(s[1])) {
            matches++;
        }
        if (s[1].equals(s[2])) {
            matches++;
        }
        if(s[0].equals(s[2])) {
            matches++;
        }

        if(matches == 1) {
            System.out.println("Yes");
        } else{
            System.out.println("No");
        }
    }
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz