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