#include <iostream>
#include <algorithm>
using namespace std;
int a,b,c;
int main(){
  cin>>a>>b>>c;
  if(max(max(a,b),c)-(a+b+c-max(max(a,b),c)==0){
    cout<<"Yes"<<endl;
  }else{
    cout<<"No"<<endl;
  }
  return 0;
}