import java.util.Scanner; import java.util.*; // 注意类名必须为 Main, 不要有任何 package xxx 信息 public class Main { public static void main(String[] args) { Scanner scanner=new Scanner(System.in); int n=scanner.nextInt(); scanner.nextLine();//消除换行符 List<String> words=new ArrayList<>(); for (int i=0;i<n;i++){ words.add(scanner.nextLine()); } Collections.sort(words); for (String word:words){ System.out.println(word); } } }