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