import java.util.*;
public class Main { //クラス名はMain
    public static void main(String[] args) {
      	Scanner sc = new Scanner(System.in);
		int n1 = Integer.parseInt(sc.next());
     	int n2 = Integer.parseInt(sc.next());
     	int n3 = Integer.parseInt(sc.next());
      	int cnt = 0;
      
      	if( n1 == n2 ){
          cnt++;
        }
      	if( n2 == n3 ){
          cnt++;
        }
      	if( n3 == n1 ){
          cnt++;
        }
      
      	if( cnt == 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