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