Problem:
Score : 300 points

Problem Statement

As a token of his gratitude, Takahashi has decided to give his mother an integer sequence.
The sequence A needs to satisfy the conditions below:

A consists of integers between X and Y (inclusive).

For each 1\leq i \leq |A|-1, A_{i+1} is a multiple of A_i and strictly greater than A_i.

Find the maximum possible length of the sequence.

Constraints

1 \leq X \leq Y \leq 10^{18}

All input values are integers.

Input

Input is given from Standard Input in the following format:

X Y

Output

Print the maximum possible length of the sequence.

Sample Input 1

3 20

Sample Output 1

3

The sequence 3,6,18 satisfies the conditions.

Sample Input 2

25 100

Sample Output 2

3

Sample Input 3

314159265 358979323846264338

Sample Output 3

31

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
class MainClass
{
    public static void Main(string[] args)
    {

        string[] s1 = Console.ReadLine().Split(' ');
        long X = long.Parse(s1[0]);
        long Y = long.Parse(s1[1]);
        int ans = 0;

        long i = X;

        while(i<=Y)
        {

            ans++;

            i = i * 2;

        }
            
        //for (int i = X; i <= Y;i++)
        //{
         


        //}


        Console.WriteLine(ans);

    }
}