/*
TASK: cnums
LANG: C++
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <ctype.h>
#include <stdarg.h>

#define NAME "cnums"
    
    /* boilerplate */
    int debug;
    char *in;
    FILE *fin, *fout;
    
    void panic(char *fmt, ...) {
        va_list arg;
        va_start(arg, fmt);
        fprintf(stderr, "panic: ");
        vfprintf(stderr, fmt, arg);
        fprintf(stderr, "\n");
        *(char*)0=0;
    }

    void setup(int argc, char **argv) {
        /* setup, input */
        while(argc > 1 && strcmp(argv[1], "-d")==0)
            debug++, argc--, argv++;
        if(argc > 1){
            in = argv[1];
            fout = stdout;
        }else{
            in = NAME ".in";
            fout = fopen(NAME ".out", "w");
            if(fout == NULL)
                panic("cannot open " NAME ".out");
        }
        fin = fopen(in, "r");
        if(fin == NULL)
            panic("cannot open %s", in);
        setbuf(stdout, 0);
        setbuf(stderr, 0);
    }

int ones(unsigned int x) {
    int n = 0;
    for(; x; x>>=1)
        n += x&1;
    return n;
}

int main(int argc, char **argv) {
    int lo, hi, n;
    setup(argc, argv);
    fscanf(fin, "%d %d", &lo, &hi);
    for(n = 0; lo<=hi; lo++)
        if(ones(lo) <= 4)
            n++;
        else
            lo += (lo&-lo)-1;   /* change xxx1000 to xxx1111 */
    fprintf(fout, "%d\n", n);
    return 0;
}