#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, srt, end) for (long long i = (srt); i < (long long)(end); i++)
#define VL vector<ll>
#define VS vector<string>
#define VB vector<bool>
#define VP vector<pair<ll,ll>>
#define VVL vector<vector<ll>>
#define VVP vector<vector<pair<ll,ll>>>
#define PL pair<ll,ll>
#define ALL(v) (v).begin(), (v).end()
ll d1[4] = {1, -1, 0, 0};
ll d2[4] = {0, 0, 1, -1};

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