#include <bits/stdc++.h>
using namespace std;
int main() {
  int a[3];
  for (int i = 1; i <= 3; ++i) cin >> a[i];
  if (a[0] + a[1] == a[2] || a[1] + a[2] == a[0] || a[0] + a[2] == a[1])
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
  return 0;
}
