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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Write("Enter i: ");
            int i = int.Parse(Console.ReadLine());
            Console.Write("Enter j: ");
            int j = int.Parse(Console.ReadLine());
            int cycle = 0;
            int temp;

            for (int n = j; n >= i; n = n - 1)
            {
                temp = cycles(n);
                if (temp > cycle)
                {
                    cycle = temp;
                }
            }
            Console.Write("i = {0}, j = {1}, cycle = {2}", i, j, cycle);
            Console.ReadKey();
        }

        static int cycles(int n)
        {
            int temp = 1;
            while (n != 1)
            {
                if (n % 2 == 0)
                {
                    n = n / 2;
                }
                else
                {
                    n = n * 3 + 1;
                }
                temp++;
            }
            return temp;
        }
    }
}