#include <bits/stdc++.h>
using namespace std;
int main() {
  vector<int> cs(3);
  int v = 0;
  for (int i = 0; i < 3; ++i) {
    cin >> cs[i];
    v += cs[i];
  }
  v /= 2;
  for (auto c : cs) {
    if (v == c) {
      cout << "Yes" << endl;
      return 0;
    }
  }
  cout << "No" << endl;
  return 0;
}
