import java.util.*;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String input_text = scanner.nextLine();
        String[] data = input_text.split(" ");
        if(data[0].equals(data[1]) && data[0].equals(data[2])) {
            System.out.println("No");
        } else if (data[0].equals(data[1]) && !data[0].equals(data[2])) {
            System.out.println("Yes");
        } else if (data[0].equals(data[2]) && !data[0].equals(data[1])) {
            System.out.println("Yes");
        } else if (data[1].equals(data[2]) && !data[0].equals(data[1])) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
        scanner.close();
    }

}
/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