import std.stdio;
import std.conv;
import std.string;
import std.math;
import std.random;
import std.range;
import std.algorithm;
import std.functional;
import core.bitop;
import std.bigint;
import std.typecons;
import std.container;
 
void main()
{
    auto input = readln.split.to!(ulong[]);
    auto X = input[0], Y = input[1];

    int result;
    for (ulong cur = X; cur <= Y; cur *= 2)
        result++;
    result.writeln;
}