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