#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
 
int main(){
  vector<int> abc(3);
  cin >> abc.at(0) >> abc.at(1) >> abc.at(2);
  sort(abc.begin(), abc.end())
  if(abc.at(0)+abc.at(2) == abc.at(1)){cout << "Yes" << endl;}
  else{cout << "No" << endl;}
  return 0;
}