#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const double pi = acos(-1);
template <typename T>
ostream& operator<<(ostream& os, const vector<T>& v) {
  for (ll i = (0), __last_i = (v.size()); i < __last_i; i++) {
    if (i) os << " ";
    os << v[i];
  }
  return os;
}
template <typename T>
ostream& operator<<(ostream& os, const vector<vector<T>>& v) {
  for (ll i = (0), __last_i = (v.size()); i < __last_i; i++) {
    if (i) os << endl;
    os << v[i];
  }
  return os;
}
int main() {
  int a, b, c;
  cin >> a >> b >> c;
  if ((a + b + c) / 2 == a || (a + b + c) / 2 == b || (a + b + c) / 2 == c) {
    cout << "Yes" << endl;
  } else {
    cout << "No";
  }
  return 0;
}
