#include <bits/stdc++.h>
using namespace std;
int main() {
  string ans;
  int A, B, C;
  vector<int> vec = {A, B, C};
  sort(vec.begin(), vec.end());
  if (vec[2] == vec[0] + vec[1])
    ans = "Yes";
  else
    ans = "No";
  cout << ans << endl;
}
