[BOJ] 1181 단어정렬

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _1181
{
    class Program
    {
        static void Main(string[] args)
        {
            using (var stream = new StreamWriter(Console.OpenStandardOutput()))
            {
                int n = Convert.ToInt32(Console.ReadLine());
                List<string> list = new List<string>();
                for (int i = 0; i < n; i++)
                    list.Add(Console.ReadLine());
                var sequence = list.OrderBy(x => x.Length).ThenBy(x => x).Distinct();
                foreach (string w in sequence)
                    stream.WriteLine(w);
            }
            
        }
    }
}