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

int main() {

  int a, b, c; cin >> a >> b >> c;
  int M;
  M = max({a, b, c});
  if (2 * M = a + b + c) {
    cout << "Yes" << endl;
  }
  else {
    cout << "No" << endl;
  }
    
}
