1ва задача

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

namespace _01._Dictionary
{
    class Program
    {
        static void Main()
        {
            var words = new Dictionary<string, List<string>>();

            var firstLine = Console.ReadLine().Split(" | ");

            for (int i = 0; i < firstLine.Length; i++)
            {
                var wordsWithDefinitions = firstLine[i].Split(": ");
                var word = wordsWithDefinitions[0];
                var definition = wordsWithDefinitions[1];
                if (!words.ContainsKey(word))
                {
                    words[word] = new List<string>();
                    words[word].Add(definition);
                }
                else if (words.ContainsKey(word) && !words[word].Contains(definition))
                {
                    words[word].Add(definition);
                }
            }

            var secondLine = Console.ReadLine().Split(" | ");

            for (int i = 0; i < secondLine.Length; i++)
            {
                if (words.ContainsKey(secondLine[i]))
                {
                    Console.WriteLine($"{secondLine[i]}");
                    foreach (var definition in words[secondLine[i]].OrderByDescending(x => x.Length))
                    {
                        Console.WriteLine($" -{definition}");
                    }
                }
            }

            var thirdLine = Console.ReadLine();

            if (thirdLine == "End")
            {
                return;
            }
            else if (thirdLine == "List")
            {
                foreach (var word in words.OrderBy(x => x.Key))
                {
                    Console.Write($"{word.Key}" + " ");
                }
            }
        }
    }
}