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