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