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import java.io.IOException;
import java.util.Scanner;

public class kie {
	public static void main(String args[]) throws IOException {
		
		Scanner scanner = new Scanner(System.in);
		
		int n = scanner.nextInt();
		// read and process bank notes
		
		long sum = 0;
		int number_of_odd = 0;
		int min_odd = Integer.MAX_VALUE;
		
		for (int i = 0; i < n; i++) {
			int current = scanner.nextInt();
			sum += current;
			if(current % 2 == 1){
				number_of_odd++;
				if(current < min_odd){
					min_odd = current;
				}
			}
		}
		
		if(n == 1 && number_of_odd == 1){
			System.out.println("NIESTETY");
		}
		else if(number_of_odd % 2 == 0){
			System.out.println(sum);
		}
		else{
			System.out.println(sum - min_odd);
		}

		scanner.close();
	}
}