# include <bits/stdc++.h>
using namespace std;
int dp[500005];
int id = 1;
const int k = 250000;
vector <int> an[2];
bool fl;
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
  freopen("equation.in","r",stdin);
 freopen("equation.out","w",stdout);
long long n,m,i,j,x;
cin>>n;
fl=1;
an[0].push_back(0);
for(j=1;j<=n;j++)
{
    an[fl].clear();
    cin>>x;
    id++;
   for(i=0;i<an[1-fl].size();i++)
   {
     //  cout<<an[1-fl][i]<<endl;
       if(dp[an[1-fl][i]+k+x]!=id)
       {
           an[fl].push_back(an[1-fl][i]+x);
           dp[an[1-fl][i]+k+x]=id;
       }
       if(dp[an[1-fl][i]+k-x]!=id)
       {
           an[fl].push_back(an[1-fl][i]-x);
           dp[an[1-fl][i]+k-x]=id;
       }
   }
    fl=1-fl;
   // cout<<endl<<endl;
}
if(dp[k]==id)cout<<"YES"<<endl;
else
    cout<<"NO"<<endl;
return 0;
}