import java.util.Set;

import java.util.HashSet;

import java.util.Scanner;

import java.util.Iterator;

public class SetTest{

public static void main(String[] args){

Set<String> words = new HashSet<String>();

long totalTime = 0;

try(Scanner in = new Scanner(System.in)){

while(in.hasNext()){

String word = in.next();

long callTime = System.currentTimeMillis();

words.add(word);

callTime = System.currentTimeMillis() - callTime;

totalTime += callTime;

}

}

Iterator<String> iter = words.iterator();

for(int i = 0; i < 10 && iter.hasNext(); i++){

System.out.println(iter.next());

}

System.out.println(words);

System.out.println("words number:"+words.size()+"total time:"+totalTime);

}

}