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