using System;

using System.Collections.Generic;

​

public class FairRandom {

    private int lastNumber = 3;   // we always need to know the last number generated

                                  // so it's a private field

    private Random rnd;           // we would also like to reuse the same Random object 

    public FairRandom() {

         rnd = new Random();

    }

    public FairRandom(int a){

        rnd = new Random(a);

    }

    public int Next() {

        int num;

        if (lastNumber == 6) {

            num = rnd.Next(1,3);

        }

        else if (lastNumber == 1) {

            num = rnd.Next(5,7);

        }

        else {

            num = rnd.Next(1,7); 

        }

        lastNumber = num;

        return num;

    }

}

​

public class Program

{   

    public static void Main()

    {

        Console.WriteLine("Please input 1 integer to be the seed");

        string input = Console.ReadLine();

        string[] tokens = input.Split();

            int num;

            bool success = int.TryParse(tokens[0],out num);

            if (success) {

            FairRandom rnd = new FairRandom(num);

            Console.WriteLine("Random sequence:"); 

            for (int i=0;i<100;i++)

            Console.WriteLine(rnd.Next());

            }  

        else{

            Console.WriteLine("It is not integer.");

        }

    }

}