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import java.io.*;
import java.util.Arrays;
import java.util.StringTokenizer;
import java.util.stream.IntStream;

public class kie {

    public static void main(String[] args) {
        Reader.init(System.in);
        int N = Reader.nextInt();
        int sum = 0;
        int smallestOddNumber = Integer.MAX_VALUE;
        for (int i = 0; i < N; i++) {
            int number = Reader.nextInt();
            sum += number;
            if ((number & 1) != 0 && number < smallestOddNumber) {
                smallestOddNumber = number;
            }
        }

        if ((sum & 1) == 0) {
            Writer.println("" + sum);
        } else {
            sum -= smallestOddNumber;
            if (sum > 0) {
                Writer.println("" + sum);
            } else {
                Writer.println("NIESTETY");
            }
        }

        Writer.flush();
    }

    // =========================
    // based on @author: http://www.rgagnon.com/javadetails/java-0603.html
    static class Writer {
        private static BufferedWriter out;

        static {
            out = new BufferedWriter(new OutputStreamWriter(System.out), 512);
        }

        static void print(char c) {
            try {
                out.write(c);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        static void print(String str) {
            try {
                out.write(str);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        static void println(String str) {
            try {
                out.write(str);
                out.write("\n");
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        static void println() {
            try {
                out.write("\n");
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        static void flush() {
            try {
                out.flush();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        @Override
        protected void finalize() {
            try {
                out.flush();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    // =========================
    // based on @author: http://www.cpe.ku.ac.th/~jim/java-io.html
    static class Reader {
        static BufferedReader reader;
        static StringTokenizer tokenizer;

        static void init(InputStream input) {
            reader = new BufferedReader(new InputStreamReader(input));
            tokenizer = new StringTokenizer("");
        }

        static String next() {
            try {
                while (!tokenizer.hasMoreTokens()) {
                    String str;
                    str = reader.readLine();
                    if (str == null)
                        return null;
                    tokenizer = new StringTokenizer(str);
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
            return tokenizer.nextToken();
        }

        static int nextInt() {
            try {
                return Integer.parseInt(next());
            } catch (NumberFormatException e) {
                e.printStackTrace();
            }
            return -1;
        }

        static double nextDouble() {
            try {
                return Double.parseDouble(next());
            } catch (NumberFormatException e) {
                e.printStackTrace();
            }
            return -1;
        }
    }
    // =========================
}