#include <bits/stdc++.h>
int main(int argc, char const *argv[]) {
  long long a, b, c;
  std::cin >> a >> b >> c;
  long long max = std::max({a, b, c});
  if ((a + b + c) / 2 == max) {
    std::cout << "Yes" << '\n';
  } else {
    std::cout << "No" << '\n';
  }
  return 0;
}
