#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c;
  cin >> a >> b >> c;
  if (((a + b + c) / 2 == max(a, max(b, c))) && ((a + b + c) / 3 != a)) {
    cout << "Yes" << endl;
  } else {
    cout << "No" << endl;
  }
}
