public class Solution {
    private static List<String> strings;

    public static void main(String[] args) throws Exception {
        //напишите тут ваш код
        ArrayList<String> list = new ArrayList<String>();

        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        for (int i = 0; i < 5; i++) {
            list.add(reader.readLine());
        }

        ArrayList <String> maxList = new ArrayList<String>();
        String max = "";

        for (int i = 0; i < list.size(); i++) {

            if (list.get(i).length() > max.length())
                max = list.get(i);

            if (list.get(i).length() == max.length())
                maxList.add(list.get(i));
        }

        for(int i = 0; i < maxList.size(); i++)
            System.out.println(maxList.get(i));
    }
}