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