#include <bits/stdc++.h>
using namespace std;
int main() {
  int A, B, C;
  if (C == A + B) {
    cout << "Yes" << endl;
  }
  if (B == A + C) {
    cout << "Yes" << endl;
  }
  if (A == C + B) {
    cout << "Yes" << endl;
  } else {
    cout << "No" << endl;
  }
}
