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/**

* Date: 2018. 10. 5.

* Author: inhyuck | https://github.com/inhyuck

* Solution URL: https://github.com/inhyuck/algorithm

* Title: 단어 정렬

* description: 알파벳 소문자로 이루어진 N개의 단어가 들어오면 아래와 같은 조건에 따라 정렬하는 프로그램을 작성하시오.

* 길이가 짧은 것부터

* 길이가 같으면 사전 순으로

* Problem URL: https://www.acmicpc.net/problem/1181

*/

package io.inhyuck.sort;

import java.util.Comparator;

import java.util.HashSet;

import java.util.Scanner;

import java.util.Set;

public class Q1181 {

public static void main(String[] args) {

Scanner scanner = new Scanner(System.in);

int n = scanner.nextInt();

scanner.nextLine();

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

for (int i = 0; i < n; i++) {

words.add(scanner.nextLine());

}

words.stream().sorted(Comparator.comparing(String::length).thenComparing(Comparator.naturalOrder()))

.forEach(System.out::println);

}

}