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

public class kie {

	public static void debugPrint(List<Integer> in) {
		for(int e : in) {
			System.out.print(e + ",");
		}
		System.out.println();
	}
	
	public static int sum(List<Integer> in) {
		int sum = 0;
		for (int e : in ) {
			sum += e;
		}
		
		return sum;
	}
	
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
		List<Integer> even = new ArrayList<Integer>();
		List<Integer> odd = new ArrayList<Integer>();
				
		
		for(int i = 0; i < n; i++) {
			int k = sc.nextInt();
			if (k % 2 == 0) {
				even.add(k);
			} else {
				odd.add(k);
			}
		}
		
		Collections.sort(even);
		
		Collections.sort(odd);
		Collections.reverse(odd);
		
		if (odd.size() == 1 && even.size() == 0) {
			System.out.println("NIESTETY");
			return;
		}
		
		int sumEven = sum(even);
		
		if (odd.size() % 2 == 1) {
			odd.remove(odd.size() - 1);
		}
		
		int sumOdd = sum(odd);
		
		System.out.println(sumEven + sumOdd);
		
		
		
	}

}