#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  int a, b, c;
  cin >> a >> b >> c;
  cout << (min(a, b) + min(b, c) == max(max(a, b), c) ? "Yes" : "No");
  return 0;
}
