#include <bits/stdc++.h>
int main() {
  int totalPack = 3;
  std::vector<int> pack(totalPack);
  for (int i = 0; i < totalPack; i++) {
    std::cin >> pack[i];
  }
  sort(pack.begin(), pack.end());
  int maxPackNumber = pack[2];
  if (maxPackNumber == (pack[0] + pack[1])) {
    std::cout << "Yes" << std::endl;
  } else {
    std::cout << "No" << std::endl;
  }
  return 0;
}
