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