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