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