public class Solution {
    public static void main(String[] args) throws IOException {
        //напишите тут ваш код
        ArrayList<String >list =new ArrayList<>();
        Scanner scanner = new Scanner(System.in);

        String max="";
        for (int i = 0; i < 10; i++) {
            list.add(scanner.nextLine());
        }
        String min=list.get(0);//why min can find only list.get(0)
        for (int i = 0; i < list.size(); i++) {
            if (list.get(i).length()>max.length())max=list.get(i);
        }
        for (int i = 0; i < list.size(); i++) {
            if (list.get(i).length()<min.length())min=list.get(i);
        }
        if (min.equals(max)) System.out.println(max);//why it's not worked ?
        else System.out.println(min);
    }
}