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import java.io.BufferedReader;
import java.io.InputStreamReader;

public class kie {
	public static void main(final String ... args) throws Exception {
		final BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		
		String line = in.readLine();
		
		line = in.readLine();
		String[] splittedLine = line.split(" "); 
		int[] numbers = new int[splittedLine.length];
		int sum = 0;
		int minOdd = Integer.MAX_VALUE - 1;
		for(int i = 0; i < splittedLine.length; i++) {
			numbers[i] = Integer.parseInt(splittedLine[i]);
			sum += numbers[i];
			if (numbers[i] % 2 == 1 && numbers[i] < minOdd) {
				minOdd = numbers[i];
			}
		}
		
		in.close();
		
		if (sum % 2 == 0) {
			System.out.println(sum);
		} else if (minOdd % 2 == 1 && splittedLine.length > 1) {
			System.out.println(sum - minOdd);
		} else {
			System.out.println("NIESTETY");
		}
	}
}