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