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