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