#include <cstdio>
using namespace std;

int main() {
  int a, b, c;
  char s[101];
  scanf("%d %d %d", &a, &b, &c);
  if (a + b == c || b + c == a || c + a == b)
    s = "Yes";
  else
    s = "No";
  printf("%s\n", s);
  return 0;
}
