RolliTheCoder

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

namespace _3.RoliTheCoder
{
    class Program
    {
        static void Main(string[] args)
        {
            var dict = new Dictionary<string, Dictionary<string, List<string>>>();
            while (true)
            {
                string[] input = Console.ReadLine().Split().ToArray();
                bool isValid = true;
                if ((input[0] == "Time") && (input[1] == "for") && (input[2] == "Code"))
                {
                    break;
                }
                if ((input.Length>=2)&&(!input[1].StartsWith("#")))
                {
                    isValid = false;
                }
                for (int i = 2; i < input.Length; i++)
                {
                    if (!input[i].StartsWith("@"))
                    {
                        isValid = false;
                        break;
                    }
                }
                if (isValid == false)
                {
                    continue;
                }
                string id = input[0];
                string eventName = "";
                if (input.Length >= 2)
                {
                    eventName += input[1].TrimStart('#');
                }
                var inner = new List<string>();
                for (int i = 2; i < input.Length; i++)
                {
                    inner.Add(input[i]);
                }
                var innerList = inner.Distinct().ToList();
                if ((!dict.ContainsKey(id))&&(eventName !=""))
                {
                    var innerDict = new Dictionary<string, List<string>>();
                    innerDict.Add(eventName, innerList);
                    dict.Add(id, innerDict);
                }
                else
                {
                    if (dict[id].ContainsKey(eventName))
                    {
                        for (int i = 0; i < innerList.Count; i++)
                        {
                            if (!dict[id][eventName].Contains(innerList[i]))
                            {
                                dict[id][eventName].Add(innerList[i]);
                            }
                        }

                    }
                }
            }
            if (dict.Count > 0)
            {
                foreach (var i in dict.OrderByDescending(x => dict[x.Key].Values.First().Count))
                {
                    foreach (var eventt in i.Value)
                    {
                        Console.WriteLine($"{eventt.Key} - {eventt.Value.Count}");
                        foreach (var item in eventt.Value.OrderBy(x => x))
                        {
                            Console.WriteLine($"{item}");
                        }
                    }
                }
            }
        }
    }
}