#include <bits/stdc++.h>
int main() {
  std::uint8_t a, b, c;
  std::cin >> a >> b >> c;
  if (a + c == b || a + b == c || b + c == a) {
    std::cout << "Yes" << std::endl;
  } else {
    std::cout << "No" << std::endl;
  }
  return 0;
}
