#include<iostream>
#include<fstream>
#include<bitset>

using namespace std;

const int MAXN = 5e5 + 5;
const int offset = 2e5 + 5e4;

int n;
int a[MAXN];

bitset <MAXN> dp[2];

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(NULL);

    ifstream cin("equation.in");
    ofstream cout("equation.out");

    cin >> n;
    for(int i = 0;i<n;i++) cin >> a[i];

    dp[0].reset();
    dp[1].reset();
    dp[0][ a[0] + offset ] = 1;
    dp[0][ -a[0] + offset ] = 1;
    for(int i = 1;i<n;i++)
    {
        dp[i%2].reset();
        dp[i%2] |= (dp[(i-1)%2]<<a[i]);
        dp[i%2] |= (dp[(i-1)%2]>>a[i]);
    }



    if(dp[(n-1)%2][0+offset]==1) cout << "YES" << '\n';
    else cout << "NO" << '\n';
}