#include <bits/stdc++.h>
#define inf 2333333333333333
#define N 1000010
#define p(a) putchar(a)
#define For(i,a,b) for(long long i=a;i<=b;++i)
//by war
//2020.7.15
using namespace std;
long long l,r;
long long f[36][36][3][36][36];
vector<long long>dim;
void in(long long &x){
    long long
 
 y=1;char c=getchar();x=0;
    while(c<'0'||c>'9'){if(c=='-')y=-1;c=getchar();}
    while(c<='9'&&c>='0'){ x=(x<<1)+(x<<3)+c-'0';c=getchar();}
    x*=y;
}
void o(long long x){
    if(x<0){p('-');x=-x;}
    if(x>9)o(x/10);
    p(x%10+'0');
}

long long dfs(long long x,long
 
 long st,long long op,long long cnt0,long long cnt1){
    if(!x){
        if(cnt0>=cnt1) return 1;
        else return 0;
    }
    if(~f[x][st][op][cnt0][cnt1]) return f[x][st][op][cnt0][cnt1];
    long long maxx=op?dim[x]:1,r=0;
    For(i,0,maxx){
        if(st==11 && i==0) r+=dfs(x-1,11,op&(i==maxx),cnt0,cnt1);
        
 
else r+=dfs(x-1,i,op&(i==maxx),cnt0+(i==0),cnt1+(i==1)); 
    }
    return f[x][st][op][cnt0][cnt1]=r;
}

long long deal(long long x){
    memset(f,-1,sizeof f);
    dim.clear();
    dim.push_back(2333);
    while(x){
        dim.push_back(x%2);
        x/=2;
    }
    return dfs(dim.size()-1,11,1,0,0);
}

signed main(){
    in(l);in(r);
    o(deal(r)-deal(l-1));
    return 0;
}