#include<iostream>
#include<iomanip>
using namespace std;

int main(){
	int a, b;cin>>a>>b;
	int ans=0;
	for(int i=a; i<=b; i++){
		int n =i, cnt=1;
		while(n!=1){
			cnt ++;
			if(n%2==1) n =3*n+1;
			else n = n/2;
		}
		ans = max(ans, cnt);
	} 
	cout<<ans;
	return 0;
}