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