#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, m, l, max2, min2, mid;
  cin >> n >> m >> l;
  max2 = max(n, max(l, m));
  min2 = min(n, min(l, m));
  mid = min(n, max(l, m));
  if (max2 == min2 + mid)
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
  return 0;
}
