#include <bits/stdc++.h>

using namespace std;

#define FOR(i, a, b) for(int i = (a); i < (b); i++)
#define RFOR(i, a, b) for(int i = (a) - 1; i >= (b); i--)
#define SZ(a) int(a.size())
#define ALL(a) a.begin(), a.end()
#define PB push_back
#define MP make_pair
#define F first 
#define S second

typedef long long LL;
typedef vector<int> VI;
typedef pair<int, int> PII;
typedef double db;




int main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	
	vector<LL> vals;
	FOR(n, 1, 64)
	{
		FOR(m, 1, 63)
		{
			FOR(cnt, 1, 64)
			{
				int cnt1 = (cnt + 1) / 2;
				int cnt0 = (cnt) / 2;
				
				if(cnt1 * n + cnt0 * m > 63)
					break;
				
				__int128 val1 = 1;
				val1 = (val1 << n) - 1;
				
				LL sum = 0;
				FOR(i, 0, cnt)
				{
					if(i % 2 == 0)
					{
						sum = (sum << n) + val1;
					}
					else
						sum = (sum << m);
				}
				if(cnt != 1 || m == 1)
				{
					vals.PB(sum);
				}
			}
		}
	}
	sort(ALL(vals));
	vals.resize(unique(ALL(vals)) - vals.begin());
	
	LL l, r;
	cin >> l >> r;
	int ans = 0;
	for(LL i : vals)
	{
		ans += (l <= i && i <= r);
	}
	cout << ans << "\n";
	

	
	
	


	
	return 0;
}