using System;

public class Program

{

    public static void Main()

    {

            int max = 0, count = 0, leng = 0, check_no = 6, Dice_roll=9;

            string N="666644434";

            for (int i = 0; i<Dice_roll; i++)

            {

                if (N[i]!= 6) { leng++; }

                else { leng = 0; }

                if (leng > max) { max = leng; }

​

                //Check for Exact two six 

​

                    if (N[i] == check_no && N[i + 1] == check_no)

                {

                    if (N[i - 1] != check_no && N[i + 2] != check_no)

                    {

                        count++;

                    }

                }

            }

​

            Console.Write("No of Times Exact two 6 occure: \t "+count);

            Console.Write("\nMax length of Substring having no 6: \t"+max);

​

    }

}