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import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class kie {
	public static void main(String[] args) {
		Scanner scn = new Scanner(System.in);
		long first = Integer.decode(scn.nextLine());
		String sec = scn.nextLine();
		String[] sec_ = sec.split(" ");
		Long[] sec__ = getArray(sec_);
		long sum = 0;
		for(long i : sec__) {
			sum += i;
		}
		if(sum % 2 > 0)
		{
			sum -= getSmallestUneven(sec__);
		}
		if(sum > 0) {
			System.out.println(sum);
		} else {
			System.out.println("NIESTETY");
		}
	}
	public static Long[] getArray(String[] arg)
	{ 
		List<Long> ints = new ArrayList<Long>();
		for(String s : arg) {
			ints.add(Long.decode(s));
		}
		return ints.toArray(new Long[0]);
	}
	public static long getSmallestUneven(Long[] arg) {
		long smallest = 1000;
		for(Long i : arg) {
			if(i < smallest && (i % 2 > 0))
				smallest = i;
		}
		return smallest;
	}
}