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

int main() {
  int a,b,c;
  cin >> a >> b >> c;

  if (a+b == c) {
    cout << "Yes" << endl;
  }
  if (a+c == b) {
    cout << "Yes" << endl;
  }
  if (c+b == a) {
    cout << "Yes" << endl;
  }
  else {
    cout << "No"  << endl;
}
