#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  int a, b, c;
  cin >> a >> b >> c;
  int avg = (a + b + c) / 2;
  if (avg == a || avg == b || avg == c || avg == a + b || avg == a + c ||
      avg == b + c)
    cout << "Yes";
  else
    cout << "No";
  return 0;
}
