3092

#include <iostream>
#include <fstream>
#include <vector>

using namespace std;

int main() {
    ifstream fin("input.txt");
    ofstream fout("output.txt");

    int n;
    fin >> n;
    vector<int> vec(n);
    int sum = 0;
    for (int i = 0; i < vec.size(); i++) {
        fin >> vec[i];
        sum += vec[i];
    }
    if (sum % 2 == 1) {
        fout << "NO" << endl;
        fin.close();
        fout.close();
        return 0;
    }
    vector<bool> answ(sum + 1);
    answ[0] = 1;
    for (int i = 0; i < n; i++)
        for (int j = sum - vec[i]; j >= 0; j--)
            if (answ[j]) answ[j + vec[i]] = 1;

    fout << (answ[sum / 2] ? "YES" : "NO") << endl;


    fin.close();
    fout.close();
    return 0;
}