#include <bits/stdc++.h>
using namespace std;
int main(void) {
  int a, b, c;
  int n[3];
  cin >> n[0] >> n[1] >> n[2];
  sort(n, n + 3);
  if (n[0] + n[1] == n[2])
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
  return 0;
}
