#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c;
  scanf("%d %d %d", &a, &b, &c);
  if (a == b + c || b == a + c || c == b + a) {
    cout << "Yes" << endl;
  } else
    cout << "No" << endl;
  return 0;
}
