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