05. Dragon Army

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

namespace DragonArmy
{

    class Program
    {
        static void Main()
        {
            int n = int.Parse(Console.ReadLine());

            var dragons = new Dictionary<string, SortedDictionary<string, List<int>>>();

            for (int i = 0; i < n; i++)
            {
                string[] tokens = Console.ReadLine().Split(" ");

                string type = tokens[0];
                string name = tokens[1];
                int damage = tokens[2] == "null" ? 45 : int.Parse(tokens[2]);
                int health = tokens[3] == "null" ? 250 : int.Parse(tokens[3]);
                int armor = tokens[4] == "null" ? 10 : int.Parse(tokens[4]);

                if (!dragons.ContainsKey(type))
                {
                    dragons.Add(type, new SortedDictionary<string, List<int>>());
                }

                dragons[type][name] = new List<int>{ damage, health, armor};
            }

            foreach (var type in dragons)
            {
                double[] averageType = new double[3];
                for (int i = 0; i < 3; i++)
                {
                    averageType[i] = type.Value.Values.Select(x => x[i]).Average();
                }

                Console.WriteLine($"{type.Key}::({averageType[0]:f2}/{averageType[1]:f2}/{averageType[2]:f2})");

                foreach (var dragon in type.Value)
                {
                    Console.WriteLine($"-{dragon.Key} -> damage: {dragon.Value[0]}, health: {dragon.Value[1]}, armor: {dragon.Value[2]}");
                }
            }
        }
    }
}