#include <bits/stdc++.h>
using namespace std;


int main(){

  int vector<int> v(3);
  for (int x:v) {
    cin >> v.at(x);
  }

  sort(v.begin(),v.begin());
  if (v.at(1)+v.at(0) == v.at(2)) {
    cout << "Yes" << endl;
  } else {
    cout << "No" << endl;
  }
}
