#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, h;
  cin >> a >> b >> h;
  long d = (a + b + h) / 2;
  if (a == d)
    cout << "Yes" << endl;
  else if (b == d)
    cout << "Yes" << endl;
  else if (h == d)
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
  return 0;
}
