using System;
using System.Collections.Generic;
using System.Linq;

namespace CitiesByContinentAndCountry
{
    class StartUp
    {
        static void Main()
        {
            List<Continent> continents = new List<Continent>();

            int n = int.Parse(Console.ReadLine());

            for (int i = 0; i < n; i++)
            {
                string[] command = Console.ReadLine()
                    .Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)
                    .ToArray();

                string continent = command[0];
                string country = command[1];
                string city = command[2];

                if (!continents.Any(x=>x.ContinentName == continent))
                {
                    var currentContinent = new Continent(continent, new Country(country));
                    currentContinent.Countries.Add(city)
                    continents.Add(currentContinent);
                }
                else
                {
                    var target = continents.FirstOrDefault(x => x.ContinentName == continent);

                    if (target.Country.CountryName == country)
                    {
                        target.Country.City.Add(city);
                    }
                    else
                    {
                        var currentContinent = new Continent(continent, new Country(country));
                        currentContinent.Country.City.Add(city);
                        continents.Add(currentContinent);
                    }
                }
            }

            foreach (var item in continents)
            {
                Console.WriteLine(item.ContinentName);

                Console.WriteLine($"{item.Country.CountryName} -> {string.Join(" ", item.Country.City)}");

            }
        }

        public class Continent
        {
            public Continent(string continentName, Country country)
            {
                this.ContinentName = continentName;
                this.Countries = new HashSet<Country>();
            }

            public HashSet<Country> Countries { get; set; }

            public string ContinentName { get; set; }

            public void Add(Country country)
            {
                Countries.Add(country);
            }
        }

        public class Country
        {
            public Country(string countryName)
            {
                CountryName = countryName;
                City = new HashSet<string>();
            }

            public string CountryName { get; set; }

            public HashSet<string> City { get; set; }
        }
    }
}