#include <iostream>
#include <cstdlib>
#include <algorithm>
#include <vector>
#include <string>
#include <cmath>
#include <cassert>
#include <functional>
#include <string>
#include <sstream>
#include <cctype>
using namespace std;


int main(){
  string A, B, C;
  cin >> A >> B >> C;
  string ans = "No";
  if(A + B + C == 2 * max(A, B, C)) ans = "Yes";
  cout << ans << endl;
}
