#include <bits/stdc++.h>
using namespace std;
int main() {
  long long a[3];
  cin >> a[0] >> a[1] >> a[2];
  sort(a + 0, a + 3);
  if (a[0] + a[1] == a[3]) {
    cout << "Yes";
  } else
    cout << "No";
  return 0;
}
