#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c;
  cin >> a;
  cin >> b;
  cin >> c;
  bool isok = false;
  if (a == b + c) {
    isok = true;
  } else if (b == a + c) {
    isok = true;
  } else if (c == b + c) {
    isok = true;
  }
  std::cout << (isok ? "Yes" : "No") << std::endl;
}
