#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c;
  vector<int> v;
  cin >> a >> b >> c;
  v.push_back(a);
  v.push_back(b);
  v.push_back(c);
  sort(v.begin(), v.end());
  if (v[0] + v[1] == v[2])
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
  return 0;
}
