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

namespace FIFO
{

    public class FULL : Exception {
        public FULL() { }
        public FULL(string message) : base(message) { }
    }
    public class EMPTY : Exception
    {
        public EMPTY() { }
        public EMPTY(string message) : base(message) { }
    }

    public class OUTOFSCOPE : Exception
    {
        public OUTOFSCOPE() { }
        public OUTOFSCOPE(string message) : base(message) { }
    }
    public class Kolejka
    {
        List<int> lista;
        int max_size;
        int current_size;
        int max_number;
        public Kolejka() { this.max_size = 0; this.current_size = 0; this.max_number = 0; lista = new List<int>(); }
        public Kolejka(int N, int _size)
        {
            this.max_number = N;
            this.max_size = _size;
            this.current_size = 0;
            lista = new List<int>();
        }

        public void add(int n)
        {
            if (current_size+1 > this.max_size)
            {
                throw new FULL("Kolejka jest pełna");
            }
            if(n<0 || n > this.max_number) { throw new OUTOFSCOPE("Liczba spoza zakresu (od 0 do " + this.max_number+")"); }
            lista.Add(n);
            this.current_size++;
        }

        public void print()
        {
            if (this.current_size == 0) { throw new EMPTY("Kolejka jest pusta"); }
            Console.WriteLine("\n\n=====KOLEJKA=====\n");
            for(int i = 0; i < lista.Count; i++)
            {
                Console.WriteLine(lista[i]);
            }
        }
        public void del()
        {
            if (this.current_size == 0) { throw new EMPTY("Kolejka jest pusta"); }
            lista.RemoveAt(0);
            this.current_size--;
        }
    }



    class Program
    {
        static void Main(string[] args)
        {
            Console.Write("Podaj rozmiar kolejki: ");
            string bufor = Console.ReadLine();
            int result,res2;
            bool res_parse = Int32.TryParse(bufor, out result);
            if (!res_parse || result <= 0)
            {
                Console.WriteLine("Wprowadzono niepoprawny rozmiar.");
                Console.ReadKey();
                Environment.Exit(0);
            }
            Console.Write("Podaj górną granicę zakresu liczb (dolna granica wynosi 0): ");
            bufor = Console.ReadLine();
            res_parse = Int32.TryParse(bufor, out res2);
            if (!res_parse || res2 <= 0)
            {
                Console.WriteLine("Wprowadzono niepoprawną wartość.");
                Console.ReadKey();
                Environment.Exit(0);
            }
            Console.Clear();

            Kolejka kol = new Kolejka(res2, result);
            result = -1;
            do
            {
                Console.WriteLine("[1] Dodaj do kolejki");
                Console.WriteLine("[2] Usun z kolejki");
                Console.WriteLine("[3] Wypisz kolejkę");
                Console.WriteLine("[0] Wyjdź");

                Console.Write("Twój wybór: ");
                bufor = Console.ReadLine();
                res_parse = Int32.TryParse(bufor, out result);
                if (!res_parse) result = -1;

                switch (result)
                {
                    case 1:
                        Console.Write("\nPodaj liczbę: ");
                        string buf = Console.ReadLine();
                        int number;
                        bool parse = Int32.TryParse(buf, out number);
                        if (parse)
                        {
                            try { kol.add(number); }
                            catch (FULL ex) { Console.WriteLine(ex.Message); }
                            catch (OUTOFSCOPE ex) { Console.WriteLine(ex.Message);}
                        }
                        else { Console.WriteLine("Nie jest to liczba"); }
                        Console.Write("\n");
                        break;
                    case 2:
                        try { kol.del(); }
                        catch (EMPTY ex) { Console.WriteLine(ex.Message); }
                        Console.Write("\n");
                        break;
                    case 3:
                        try { kol.print(); }
                        catch (EMPTY ex) { Console.WriteLine(ex.Message); }
                        Console.Write("\n");
                        break;
                }

            } while (result != 0);
        }
    }
}