import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        int a=sc.nextInt();
        int b=sc.nextInt();
        int c=sc.nextInt();
        if(a==b && a!=c && b!=c){
            System.out.println("Yes");
        }
        else if(a==c && a!=b && c!=b){
            System.out.println("Yes");
        }
        else if(c==b && c!=a && b!=a){
            System.out.println("Yes");
        }
        else{
            System.out.println("No");
        }
    }
    
}
