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