#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c;
  int s1, s2, s3;
  cin >> a >> b >> c;
  s1 = a + b;
  s2 = a + c;
  s3 = b + c;
  if (s1 == c || s2 == b || s3 == a)
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
  return 0;
}
