#include <bits/stdc++.h>
int main() {
  int a, b, c;
  std::cin >> a >> b >> c;
  int averageSize = (a + b + c) / 2;
  if (averageSize == a || averageSize == b || averageSize == c)
    std::cout << "Yes";
  else
    std::cout << "No";
  return 0;
}
