#include<bits/stdc++.h>

using namespace std;

const int maxi = 1e6+10;
#define pb push_back
int n;
int a[maxi];
bitset<250000> bs;
int sum;

void read_data()
{
   freopen("equation.in", "r", stdin);

    cin>>n;

    for (int i =1;i<=n;i++){
        scanf("%d",&a[i]);
        sum+=a[i];
    }
   fclose(stdin);
}

void print_data()
{
    freopen("equation.out", "w",stdout);

   if (sum&1) printf("NO\n"); else
   if (bs.test(sum/2))
    printf("YES\n"); else
    printf("NO\n");
    fclose(stdout);
}

int main()
{
    read_data();

   bs.set(0);
    for (int i =1;i<=n;i++)
        bs|=(bs<<a[i]);

    print_data();
}