import java.util.*;enum _{_;{Set<String> l=new TreeSet<String>(new Comparator<String>(){public int compare(String a,String b){int m=a.length()-b.length();return m!=0?m:a.compareTo(b);}});for(Scanner s=new Scanner(System.in);s.hasNext();)l.add(s.next());for(String o:l)System.out.println(o);}}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).