#include <bits/stdc++.h>
using namespace std;
int main() {
  int a[5];
  for (int i = 1; i <= 3; i++) cin >> a[i];
  sort(a + 1, a + 4);
  if (a[1] + a[2] == a[3])
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
  return 0;
}
