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