#include <bits/stdc++.h>
using namespace std;
 
int main(){
  
 float a,b,c;
 float avg;
  cin>>a>>b>>c;
  
  avg=(a+b+c)/3;
  if(avg==a || avg==b || avg==c){cout<<"Yes"<<endl;}
  else{cout<<"No"<<endl;}
  
  
  
 return 0; 
}
#include "bits/stdc++.h"
using namespace std;
#define mod 1000000007
#define pie  3.14159265
#define int long long int
#define fr(i,a,n) for(int i=a;i<n;i++)
#define vi vector<int>
#define vlli vector<ll>
#define pb push_back
#define ppb pop_back
#define all(v) v.begin(),v.end()
#define fv(i,a) for(auto i:a)



void solve(){
    int a,b,c;
    cin>>a>>b>>c;
    int d=a+b+c-min(a,min(b,c))-max(a,max(b,c));
    if(min(a,min(b,c)) + max(a,max(b,c))== 2*d){
        cout<<"Yes"<<endl;
    }else{
        cout<<"No"<<endl;
    }
}

signed main(){;
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t;
    t = 1;
    //cin >> t;
    while (t--)
    {
        solve();
    }
    return 0;
}

