#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c;
  cin >> a >> b >> c;
  int max1 = max(a, b);
  max1 = max(max1, c);
  if ((a + b + c) / max1 == 2)
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
  return 0;
}
