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