Key-Key Value-Value

            string keyToFind = Console.ReadLine();
            string valueToFind = Console.ReadLine();
            int n = int.Parse(Console.ReadLine());

            var myDict = new Dictionary<string, List<string>>();

            for (int i = 0; i < n; i++)
            {
                string[] inputString = Console.ReadLine()
                    .Split(new string[] { " => " }, StringSplitOptions.None);

                string inputKey = inputString[0];
                List<string> inputValues = inputString[1]
                                    .Split(';').ToList();

                myDict.Add(inputKey, inputValues);
            }

            foreach (var item in myDict)
            {
                if (item.Key.Contains(keyToFind))
                {
                    Console.WriteLine($"{item.Key}:");

                    for (int i = 0; i < item.Value.Count; i++)
                    {
                        if (item.Value[i].Contains(valueToFind))
                        {
                            Console.WriteLine($"-{item.Value[i]}");
                        }
                    }
                }
            }