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