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