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