import java.util.*;
//查找兄弟单词
public class Main_222 {
private static boolean isBrother(String str1, String str2){
char[] chars1 = str1.toCharArray();
char[] chars2 = str2.toCharArray();
Arrays.sort(chars1);
Arrays.sort(chars2);
return new String(chars1).equals(new String(chars2)) && !str1.equals(str2);
}
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
while(input.hasNextLine()){
String line = input.nextLine();
String[] words = line.split(" ");
String item = words[words.length - 2];
List<String> list = new ArrayList<>();
for (int i = 1; i < words.length - 2; i++) {
if(isBrother(words[i], item)){
list.add(words[i]);
}
}
list.sort(String::compareTo);
System.out.println(list.size());
int index = Integer.parseInt(words[words.length - 1]);
if(!list.isEmpty() && index <= list.size()){
System.out.println(list.get(index - 1));
}
}
}
}
//查找兄弟单词
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转载自blog.csdn.net/TIANHE_/article/details/107556563
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