[StartCode]
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp11
{
    internal class Program
    {
        static void Main(string[] args)
        {
            string[] fullNames = new string[0];
            string[] positions = new string[0];
            string menuOption;
            bool exit = false;

            while (exit == false)
            {
                Console.WriteLine("        МЕНЮ");
                Console.WriteLine();
                Console.WriteLine("1 - Добавить досье.\n2 - Список досье.\n3 - Удалить досье.\n4 - Поиск по фамилии.\n5 - Выход.");
                menuOption = Console.ReadLine();

                switch (menuOption)
                {
                    case "1":
                        AddElement(ref fullNames, "Добавить ФИО :");
                        AddElement(ref positions, "Добавить должность :");
                        break;
                    case "2":
                        ShowLists(fullNames,positions ,"Список досье :");
                        break;
                    case "3":
                        DeleteElement(ref fullNames, ref positions);
                        break;
                    case "4":
                        SearchSurname(fullNames,positions);
                        break;
                    case "5":
                        exit = true;
                        break;
                }
            }
        }

        static void AddElement(ref string[] array, string text)
        {
            string[] tempArray = new string[array.Length + 1];

            for (int i = 0; i < array.Length; i++)
            {
                tempArray[i] = array[i];
            }

            Console.WriteLine(text);
            string newArray = Convert.ToString(Console.ReadLine());
            tempArray[tempArray.Length - 1] = newArray;
            array = tempArray;
        }

        static void ShowLists( string[] fullNames, string[] positions, string text)
        {
            Console.WriteLine(text);
            int indent = 1;

            for (int i = 0; i < fullNames.Length; i++)
            {
                Console.WriteLine((i + indent) + ") " + fullNames[i] + " - " + positions[i] + ".");
            }
        }

        static void DeleteElement(ref string[] fullName, ref string[] position)
        {
            int number = Convert.ToInt32(Console.ReadLine());

            if (number <= fullName.Length)
            {
                for (int i = number - 1; i < fullName.Length - 1; i++)
                {
                    fullName[i] = fullName[i + 1];
                    position[i] = position[i + 1];
                }

                string[] tempFullname = new string[fullName.Length - 1];
                string[] tempPosotion = new string[position.Length - 1];

                for (int i = 0; i < fullName.Length - 1; i++)
                {
                    tempFullname[i] = fullName[i];
                    tempPosotion[i] = position[i];
                }

                fullName = tempFullname;
                position = tempPosotion;
            }

            else
            {
                Console.WriteLine("Такого в списке нету.");
            }
        }

        static void SearchSurname(string[] fullNames, string[] positions)
        {
            Console.WriteLine("Введите фамилию :");
            string surname = Console.ReadLine();

            for (int i = 0; i < fullNames.Length; i++)
            {
                string[] words = fullNames[i].Split(' ');

                if (words[0] == surname)
                {
                    Console.WriteLine(fullNames[i] + " - " + positions[i]);
                }

                else
                {
                    Console.WriteLine("Такого в списке нету.");
                }
            }
        }
    }
}
[EndCode]