using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace DragonArmy
{
    class DragonArmy
    {
        static void Main()
        {
            int numberOfLines = int.Parse(Console.ReadLine());
            Dictionary<string, List<Dictionary<string, List<Dictionary<string, int>>>>> dragons = new Dictionary<string, List<Dictionary<string, List<Dictionary<string, int>>>>>();

            for (int i = 0; i < numberOfLines; i++)
            {
                string[] input = Console.ReadLine().Split(' ');
                SetDefaultValues(input);

                List<Dictionary<string, int>> dragonStats = new List<Dictionary<string, int>>();
                Dictionary<string, List<Dictionary<string, int>>> dragon = new Dictionary<string, List<Dictionary<string, int>>>();

                string dragonColor = input[0];
                string dragonName = input[1];
                int dragonDamage = int.Parse(input[2]);
                int dragonHealth = int.Parse(input[3]);
                int dragonArmor = int.Parse(input[4]);

                dragonStats.Add(new Dictionary<string, int> { { "damage", dragonDamage } });
                dragonStats.Add(new Dictionary<string, int> { { "health", dragonHealth } });
                dragonStats.Add(new Dictionary<string, int> { { "armor", dragonArmor } });

                dragon.Add(dragonName, dragonStats);


                if (!dragons.ContainsKey(dragonColor))
                {
                   dragons.Add(dragonColor, new List<Dictionary<string, List<Dictionary<string, int>>>> { dragon});
                }
                else
                {
                    if(!dragons.ContainsValue(new List<Dictionary<string, List<Dictionary<string, int>>>> { dragon }))
                    {
                        dragons[dragonColor].Add(dragon);
                    }
                }
            }


            //Стигам до тук
            foreach (var dragon in dragons)
            {
                string name = dragon.Key;
                Console.WriteLine("{0}::({1:0.00}/{2:0.00}/{3:0.00})",name,dragon.Value.Average(x=>x.Values.));
            }
        }



        private static string[] SetDefaultValues(string[] input)
        {
            for (int i = 0; i < input.Length; i++)
            {
                if(input[i] == "null")
                {
                    if(i == 2)
                    {
                        input[i] = "250";
                    }
                    else if(i == 3)
                    {
                        input[i] = "45";
                    }
                    else if(i == 4)
                    {
                        input[i] = "10";
                    }
                }
            }
            return input;
        }
    }
}