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