#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const double PI = 3.14159265358979323846;
int main() {
  vector<int> a(3);
  for (int i = 0; i < (int)(3); i++) cin >> a[i];
  sort(a.begin(), a.end());
  if (a[0] == a[1] + a[2])
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
}
