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