import java.util.*;

public class Main {

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

        Set<String> set = new HashSet<>();
        set.add(scanner.next());
        set.add(scanner.next());
        set.add(scanner.next());

        System.out.println(set.size() ==2 ? "Yes" : "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