03. Dictionary

using System;
using System.Collections.Generic;

namespace Dictionary
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] pairsOgi = Console.ReadLine().Split(" | ");
            var wordsFromOgi = new Dictionary<string, List<string>>();

            foreach (var pair in pairsOgi)
            {
                string[] infoForYourWord = pair.Split(": ");
                string wordFromOgi = infoForYourWord[0];
                string definitionFromOgi = infoForYourWord[1];
                if (wordsFromOgi.ContainsKey(wordFromOgi))
                {
                    wordsFromOgi[wordFromOgi].Add(definitionFromOgi);
                    continue;
                }
                List<string> definitions = new List<string>();
                definitions.Add(definitionFromOgi);
                wordsFromOgi.Add(wordFromOgi, definitions);
            }
            string[] anotherWords = Console.ReadLine().Split(" | ");
            string command = Console.ReadLine();

            if (command == "Hand Over")
            {
                Console.WriteLine(string.Join(" ", wordsFromOgi.Keys));
            }
            else if (command == "Test")
            {
                List<string> wordsForTest = new List<string>();
                foreach (var word in anotherWords)
                {
                    if (wordsFromOgi.ContainsKey(word))
                    {
                        wordsForTest.Add(word);
                    }
                }
                foreach (var word in wordsForTest)
                {
                    var definitions = wordsFromOgi[word];
                    Console.WriteLine($"{word}:");
                    foreach (var definition in definitions)
                    {
                        Console.WriteLine($" -{definition}");
                    }
                }
            }
        }
    }
}