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import java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;

public class kie {

	public static void main(String[] args) {
		try {
			BufferedInputStream bis = new BufferedInputStream(System.in);

			int notesNumber = readNextNumber(bis);
			int numberOfOddNumbers = 0;
			int smallestOddNumber = -1;
			int sum = 0;
			for (int i = 0; i < notesNumber; i++) {
				int nextNote = readNextNumber(bis);
				sum += nextNote;
				if (nextNote % 2 == 1) {
					numberOfOddNumbers++;
					if (nextNote < smallestOddNumber || smallestOddNumber < 0) {
						smallestOddNumber = nextNote;
					}
				}
			}
			if (numberOfOddNumbers == 1 && notesNumber == 1) {
				System.out.println("NIESTETY");
			} else {

				if (numberOfOddNumbers % 2 == 1) {
					System.out.println("" + (sum - smallestOddNumber));
				} else {
					System.out.println("" + sum);
				}
			}
			System.exit(0);
		} catch (Exception ex) {
			System.exit(1);
		}
	}

	public static int readNextNumber(InputStream is) throws IOException {
		int b = 0;
		int currentNumber = 0;
		boolean readed = false;
		while (true) {
			b = is.read();
			if (b >= '0' && b < '9') {
				readed = true;
				currentNumber = currentNumber * 10 + b - '0';
			} else if (readed) {
				return currentNumber;
			}
		}
	}

}