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import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.util.Scanner;

public class kie {

    public static void main(String[] args) throws FileNotFoundException {

        final InputStream is;
        if (args.length >= 1) {
            is = new FileInputStream(args[0]);
        } else {
            is = System.in;
        }

        Integer result = solve(is);

        String toPrint = result != null ? result.toString() : "NIESTETY";

        System.out.print(toPrint);

    }

    public static Integer solve(InputStream is) {

        Scanner scanner = new Scanner(is);

        int numberOfNominals = scanner.nextInt();

        if (numberOfNominals == 1) {
            int theOnlyOne = scanner.nextInt();
            if (theOnlyOne % 2 == 1) {
                return null;
            } else {
                return theOnlyOne;
            }
        } else {

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

            while (scanner.hasNext()) {

                int next = scanner.nextInt();

                sum += next;
                if (next % 2 == 1 && minOdd > next) {
                    minOdd = next;
                }
            }

            return sum%2==0 ? sum : sum-minOdd;

        }

    }

}