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