#include <cstdio>
int main()
{
	int a = 0,b = 0,c = 0;
	scanf("%d %d %d",&a,&b,&c);
	if (a + b=c)printf ("Yes");
	else if (a + c=b)printf ("Yes");
	else if (b + c=a)printf ("Yes");
	else printf ("No");
	return 0;
	}