DICTIONARY zadacha

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

namespace ConsoleApplication28
{
    class Program
    {
        static void Main(string[] args)
        {

            SortedDictionary<string, SortedDictionary<string, double>> dataDictionary =
                                            new SortedDictionary<string, SortedDictionary<string, double>>();

            SortedDictionary<string, SortedDictionary<string, double>> dataO =
                                            new SortedDictionary<string, SortedDictionary<string, double>>();

            int dataLinesNumber = int.Parse(Console.ReadLine());

            string lineContents = String.Empty;
            string[] lineTokens;
            string student = "";
            string predmet = String.Empty;
            int ocenka = 0;
            int count = 2;
            for (int i = 0; i < dataLinesNumber; i++)
            {
                lineContents = Console.ReadLine();
                lineTokens = lineContents.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
                student = (lineTokens[0]) + " " +(lineTokens[1]);

                predmet = lineTokens[2];
                ocenka = int.Parse(lineTokens[3]);

                if (!dataDictionary.ContainsKey(student))
                {
                    dataDictionary[student] = new SortedDictionary<string, double>();
                }

                if (!dataDictionary[student].ContainsKey(predmet))
                {
                    count = 1;
                    dataDictionary[student][predmet] = count;


                }
                else
                {

                    dataDictionary[student][predmet] = ++count;

                }
                /////////////////// 2 dictionary
                 if (!dataO.ContainsKey(student))
                {
                    dataO[student] = new SortedDictionary<string, double>();
                }

                if (!dataO[student].ContainsKey(predmet))
                {
                    dataO[student][predmet] = ocenka;

                }
                else
                {
                    dataO[student][predmet] += ocenka;

                }


            }


            ////////////////////////////////////////

            int kondio = 0;

            bool kur = true;

            int avg = 0;
            double sum = 0;
            bool isFirstPair = true;



            foreach (var cityPair in dataDictionary)
            {
                Console.Write(cityPair.Key + ": ");
                foreach (var venuePair in cityPair.Value)
                {
                    kondio++;
                    avg += 2;
                    //  if (kondio == 1 || kondio == 4)
                    //    {
                    if (kondio % 2 != 0)
                    {
                        Console.Write("->{0}:", venuePair.Key); // , String.Join(", ", venuePair.Value)
                        foreach (var item in dataO)
                        {
                            foreach (var em in item.Value)
                            {
                                if (kondio % 2 != 0)
                                {
                                    //    if (avg == 1 || avg == 8)
                                    //     {
                                    sum = em.Value / venuePair.Value;
                                    Console.Write(" -- > {0:0.00}, ", sum);
                                    //  }
                                }
                            }
                        }
                        //  }
                    }
                }
            }
      }
     }
}