import java.io.*;
import java.util.ArrayList;
import java.util.Collections;

public class Solution {
    public static void main(String[] args) throws IOException {
        // напишите тут ваш код
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        String k = reader.readLine();

        FileInputStream inputStream = new FileInputStream(k);

        BufferedReader bufferedInputStream = new BufferedReader(new FileReader(k));
        ArrayList<Integer> list = new ArrayList<>();

        String c;
        while((c =  bufferedInputStream.readLine())!=null) {
            int g =  Integer.parseInt(c);
            list.add(g);
        }
        Collections.sort(list);

        for (int i = 0; i < list.size(); i++) {
            if (list.get(i)%2==0)
                System.out.println(list.get(i));
        }

        inputStream.close();
        bufferedInputStream.close();
        reader.close();
    }
}