Phonebook

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace FuckingDotNot
{
    class Program
    {
        static void Main(string[] args)
        {
            Dictionary<string, string> phoneBook = new Dictionary<string, string>();

            string input = Console.ReadLine();

            while (input != "END")
            {
                string[] inputParameters = input.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);

                if (inputParameters[0] == "A")
                {
                    phoneBook[inputParameters[1]] = inputParameters[2];
                }
                else
                {
                    if (!phoneBook.ContainsKey(inputParameters[1]))
                    {
                        Console.WriteLine($"Contact {inputParameters[1]} does not exist.");
                    }
                    else
                    {
                        Console.WriteLine($"{inputParameters[1]} -> {phoneBook[inputParameters[1]]}");
                    }
                }

                input = Console.ReadLine();
            }
        }
    }
}