#include <bits/stdc++.h>
using namespace std;
const int INF = 1001001001;
const long long int LINF = 100100100100100100;
const long double PI = acos(-1.0L);
__attribute__((constructor)) void initial() {
  cin.tie(nullptr);
  ios::sync_with_stdio(false);
  cout << fixed << setprecision(15);
}
signed main() {
  vector<int> a(3);
  for (int i = 0; i < (int)(3); i++) cin >> a[i];
  sort((a).begin(), (a).end());
  if ((a[0] == a[1] && a[1] == a[2]) || a[0] + a[1] == a[2])
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
  return 0;
}
