import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Arrays;
import java.util.Scanner;

public class _sol {

    public static void main(String[] args) {
        File inputFile = new File("equation.in");
        try {
            Scanner reader = new Scanner(inputFile);

            int n = reader.nextInt();
            int a[] = new int[n];

            for (int ind = 0; ind < n; ind++) {
                a[ind] = reader.nextInt();
            }
            Arrays.sort(a);
            boolean canGenerate =
                isPossible(a, a.length - 1, a[a.length - 1]) || isPossible(a, a.length - 1,
                    -a[a.length - 1]);
            FileWriter writer = new FileWriter("equation.out");
            String result = canGenerate ? "YES" : "NO";
            writer.write(result);
            writer.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    private static boolean isPossible(int[] a, int remainingNums, int targetSum) {
        System.out.println(remainingNums + " " + targetSum);
        if (remainingNums == 0) {
            if (targetSum == 0) {
                return true;
            } else {
                return false;
            }
        }
        return isPossible(a, remainingNums - 1, targetSum + a[remainingNums - 1]) ||
            isPossible(a, remainingNums - 1, targetSum - a[remainingNums - 1]);

    }
}