#include <iostream>
int main(void) {
  int a,b,c;
  if(a + b == c) {
    cout << "Yes" << endl;
  } else if (a + c == b) {
    cout << "Yes" << endl;
  } else if (b + c == a) {
    cout << "Yes" << endl;
  } else {
    cout << "No" << endl;
  }
}