import java.util.Scanner;
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();

        boolean is1 = A == B;
        boolean is2 = B == C;
        boolean is3 = C == A;

        if (is1 && !is2 && !is3) {
            System.out.println("Yes");
        } else if (!is1 && !is2 && is3) {
            System.out.println("Yes");
        } else if (!is1 && is2 && !is3) {
            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