A triple of numbers is said to be poor when two of those numbers are equal but the other number is different from those two numbers.

 #include <stdio.h>

int main()

{int a,b,c;

scanf("%d %d %d",&a,&b,&c);

if((a==c)*(c!=b)+(a==b)*(a!=c)+(b==c)&&(a!=b)==1) printf("Yes");

else printf("No");

}

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