botanics

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

namespace Q100
{
    class Program
    {
       static private uint _i, _j;
       static private bool _itof, _jtof;
        static void Main(string[] args)
        {
            for (; ; )
            {
            labeli: Console.Write("i>>>");
                _itof = uint.TryParse(Console.ReadLine(), out _i);
                if (!_itof||_i==0) goto labeli;
            labelj: Console.Write("j>>>");
                _jtof = uint.TryParse(Console.ReadLine(), out _j);
                if (!_jtof||_j>=1000000) goto labelj;
                Console.WriteLine("i={0}, j={1} ,cycle-length={2}", _i, _j, MaxCL(_i, _j));
            }
        }
        static public int MaxCL(uint x, uint y)
        {
            int countCL = 1; int tempCL;
            if (x < y)
            {
                uint temp;
                temp = x;
                x = y;
                y = temp;
            }
            for (uint i = y; i <= x; i++)
            {
                tempCL = countCL;
                countCL = 1;
                for (uint j = i; j != 1; )
                {
                    if (j % 2 == 0)
                    { j /= 2; countCL++; }
                    else
                    { j = 3 * j + 1; countCL++; }
                }
                countCL = tempCL > countCL ? tempCL : countCL;
            }
            return countCL;
        }
    }
}