#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using p = pair<int, int>;
int main() {
  vector<int> v(3);
  bool ans = false;
  for (int i = 0; i < 3; ++i) {
    cin >> v.at(i);
  }
  sort(v.begin(), v.end());
  if (v.at(0) + v.at(1) == v.at(2)) ans = true;
  if (v.at(0) == v.at(1) && v.at(1) == v.at(2)) ans = true;
  if (ans)
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
  return 0;
}
