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import java.io.IOException;
import java.util.Scanner;

public class kie {

    private static final String NIESTETY = "NIESTETY";

    private static String getValue(long sum, int minOdd) {
        if (sum == 0) {
            return NIESTETY;
        }
        if (sum % 2 == 0) {
            return String.valueOf(sum);
        }
        if (minOdd == Integer.MAX_VALUE) {
            return NIESTETY;
        }
        if (sum - minOdd == 0) {
            return NIESTETY;
        }
        return String.valueOf(sum - minOdd);
    }

    public static void main(String[] args) throws IOException {
        final Scanner sc = new Scanner(System.in);
        final int n = sc.nextInt();

        long sum = 0;
        int minOdd = Integer.MAX_VALUE;

        for (int i = 0; i < n; ++i) {
            final int v = sc.nextInt();
            if (v % 2 == 1) {
                minOdd = Math.min(minOdd, v);
            }
            sum += v;
        }
        System.out.println(getValue(sum, minOdd));
    }
}