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import java.util.*;
import java.lang.*;
import java.io.*;

class kie
{
	
	public static long sum(long howMuch, List<Long> lst) {
		List<Long> oddList = new ArrayList<Long>();
		long sum = 0;
		for (int i = 0; i < howMuch; i++) {
			long item = lst.get(i);
			if (item % 2 != 0) {
				oddList.add(item);
			} 
			sum += item;
		}
		
		if (sum % 2 == 0) {
			return sum;
		}
		else {
			long minOdd = Collections.min(oddList);
			return sum - minOdd;
		}
	}
	
	public static void main (String[] args) throws java.lang.Exception {
		List<Long> list = new ArrayList<Long>();
		Scanner in = new Scanner(System.in);
		long n = in.nextLong();
		for (long i = 0; i < n; i++) {
			long a = in.nextLong();
			list.add(a);
		}
		
		long result = sum(n, list);
		if (result > 0) {
			System.out.println(result);
		}
		else {
			System.out.println("NIESTETY");
		}
		
		 
	}
}