using System;
using System.Collections.Generic;
using System.Linq;

namespace ConsoleApp1
{
    class Program
    {
        class Dictionari
        {
            SortedDictionary<string, SortedDictionary<string, int[]>> firstYear = new SortedDictionary<string, SortedDictionary<string, int[]>>();
            SortedDictionary<string, SortedDictionary<string, int[]>> secondYear = new SortedDictionary<string, SortedDictionary<string, int[]>>();
            SortedDictionary<string, SortedDictionary<string, int[]>> thirdYear = new SortedDictionary<string, SortedDictionary<string, int[]>>();
            SortedDictionary<string, SortedDictionary<string, int[]>> fourtYear = new SortedDictionary<string, SortedDictionary<string, int[]>>();
            SortedDictionary<string, SortedDictionary<string, int[]>> fiftYear = new SortedDictionary<string, SortedDictionary<string, int[]>>();

            public Dictionari()
            {

            }
            public void CollectData(int year, string name, SortedDictionary<string, int[]> n)
            {


                switch (year)
                {
                    case 1:
                        firstYear.Add(name, n);
                        break;
                    case 2:
                        secondYear.Add(name, n);
                        break;
                    case 3:
                        thirdYear.Add(name, n);
                        break;
                    case 4:
                        fourtYear.Add(name, n);
                        break;
                    case 5:
                        fiftYear.Add(name, n);
                        break;
                }
            }
            public void PrintGrade(int years)
            {
                switch (years)
                {
                    case 1:
                        foreach (var item in firstYear)
                        {
                            Console.WriteLine($"{item.Key}  " );

                        }
                        break;
                    case 2:
                        break;
                    case 3:
                        break;
                    case 4:
                        break;
                    case 5:
                        break;
                }
            }
            static void Main(string[] args)
            {
                int years = 0;

                while (true)
                {
                    Console.Write("Enter years of study: ");
                    years = int.Parse(Console.ReadLine());
                    if (years > 5)
                    {
                        Console.Clear();
                        Console.WriteLine("Max years are 5!");
                    }
                    else
                    {
                        break;
                    }
                    Console.WriteLine();
                }


                SortedDictionary<string, int[]> data = new SortedDictionary<string, int[]>();
                Dictionari Dnevnik = new Dictionari();
                List<string> names = new List<string>();

                Console.Write("Enter students count: ");
                int studentsCount = int.Parse(Console.ReadLine());
                Console.WriteLine();
                Console.Write("Enter students subjects: ");
                string[] typeOfSubject = Console.ReadLine().Split(new char[] { ' ', ',', '-', '/' });
                Console.WriteLine();
                int subjectsCount = typeOfSubject.Length;
                Console.Clear();
                for (int year = 1; year < years; year++)
                {
                    if (year == 1)
                    {
                        for (int student = 1; student <= studentsCount; student++)
                        {
                            Console.Write("Enter student name: ");
                            string name = Console.ReadLine();
                            names.Add(name);
                            for (int subject = 0; subject < subjectsCount; subject++)
                            {
                                Console.WriteLine("Enter grades for " + typeOfSubject[subject]);
                                int[] grades = Console.ReadLine().Split(new char[] { ' ', ',' }).Select(int.Parse).ToArray();
                                data.Add(typeOfSubject[subject], grades);
                            }
                            Dnevnik.CollectData(year, name, data);
                            data.Clear();
                        }
                    }
                    else
                    {
                        for (int student = 1; student <= studentsCount; student++)
                        {
                            Console.WriteLine($"Enter datas for {names[student - 1]}");
                            for (int subject = 0; subject < subjectsCount; subject++)
                            {

                                Console.WriteLine("Enter grades for " + typeOfSubject[subject]);
                                int[] grades = Console.ReadLine().Split(new char[] { ' ', ',' }).Select(int.Parse).ToArray();
                                data.Add(typeOfSubject[subject], grades);
                            }
                            Dnevnik.CollectData(year, names[student - 1], data);
                            data.Clear();
                        }
                    }
                    Console.Clear();
                }
                Console.Clear();
            }

        }
    }
}