#include <bits/stdc++.h>
using namespace std;
int main(void)
{
  int a, b, c;
  set<int> s;
  scanf("%d%d%d", &a, &b, &c);
  s.insert(a), s.insert(b), s.insert(c);
  if (s[0] + s[1] == s[2])
    printf("Yes\n");
  else
    printf("No\n");
  return 0;
}
   