#include<iostream>
#include<algorithm>
int main()
{
  int a,b,c;
  int d[]={a,b,c};
  cin>>a>>b>>c;
  sort(d,d+3);
  if(d[1]+d[0]==d[2])
    {
      cout<<"Yes"<<end;
    }else{
    cout<<"No"<<endl;
  }
  return 0;
}