#include<stdio.h>

int main()
{
    int a, b, c;
    scanf("%d %d %d", &a, &b, &c);
    if(a==b && b==c)
        printf("No\n");
    else if(a==b || b==c || c==a)
        printf("Yes\n");
    else
        printf("No\n");
    return 0;
}
