#include <bits/stdc++.h>

using namespace std;
int num;

void count(int m,int n){
	num+=1;
	
	if(2*m<=n) count(2*m,n);
	if(2*m+1<=n) count(2*m+1,n);
}

int main(){
	int m,n;
	while(scanf("%d %d",&m,&n)!=EOF){
		num=0;
		count(m,n); 
		cout<<num<<endl;
	}
}