#include <bits/stdc++.h>
const int INF = 1e+9 + 7;
using namespace std;
int a[3];
int main() {
  ios::sync_with_stdio(false);
  cin >> a[0] >> a[1] >> a[2];
  sort(a, a + 2);
  if (a[0] == a[1] + a[2]) {
    cout << "Yes\n";
  } else {
    cout << "No\n";
  }
  return 0;
}
