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