public class Solution {
    public static void main(String[] args) throws Exception {
        Scanner scanner = new Scanner(System.in);
        ArrayList<String> lists = new ArrayList<String>();
        for (int i = 0; i < 5; i++) {
            lists.add(scanner.nextLine());
        }
        ArrayList <Integer> minIndex = new ArrayList<Integer>();
        int number = 1000;
        for(int i = 0; i < lists.size(); i++) {
            if(number > lists.get(i).length()) {
                minIndex.clear();
                minIndex.add(i);
                number = lists.get(i).length();
            } else if (number == lists.get(i).length()) {
                minIndex.add(i);
            } else if (number < lists.get(i).length()) {
                number = number;
            }
        }

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



        //напишите тут ваш код
    }