#include <iostream>
using namespace std;

int main(){
  int a, b, c, same=0;
  cin >> a >> b >> c;
  if (a + b = c) same = 1;
  if (b + c = a) same = 1;
  if (a + c = b) same = 1;
  if (same = 1) {
    cout << "Yes" << endl;
  } else {
    cout << "No" << endl;
  }
  return 0;
}
