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import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.StringTokenizer;


/**
 * @author tzmarz
 * @since 29 wrz 2015
 */
public class kie {
	
	
	private int	N;
	
	
	
	public kie() {
	
		this.N = Reader.nextInt();
		
		int smallestOdd = Integer.MAX_VALUE;
		int cntOdd = 0;
		long totalSum = 0;
		
		while (N-- > 0) {
			int a = Reader.nextInt();
			totalSum += a;
			
			if (a % 2 == 1) {
				cntOdd++;
				smallestOdd = a < smallestOdd ? a : smallestOdd;
			}
		}
		
		if (cntOdd % 2 == 1)
			totalSum -= smallestOdd;
		
		if (totalSum == 0)
			Writer.print("NIESTETY\n");
		else
			Writer.print("" + totalSum + "\n");
		
	}
	
	
	
	/****************** MAIN ******************/
	public static void main(String[] args) {
	
		Reader.init(System.in);
		new kie();
		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() {
		
			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;
		}
	}
	// =========================
}