/*
TASK: cnums
LANG: C
*/
/* precalculate 16 bits; sum both halves of word */
#include <stdio.h>
int count2[65536];

int bitcount(n) {
    int nones;
    for (nones = 0; n; n >>= 1) 
	nones += n&1;
    return nones;
}

main () {
    FILE *fin = fopen("cnums.in", "r");
    FILE *fout = fopen("cnums.out", "w");
    int i, start, end, nrep=0, nones, n;

    for (i = 0; i < 65536; i++) 	/* make a 16-bit count matrix */
	count2[i] = bitcount(i);
    fscanf (fin, "%d %d", &start, &end);
    for (i = start; i <= end; i++)
	if (count2[i&0xffff] + count2[i>>16] <= 4) nrep++;
    printf("%d\n", nrep);
    fprintf (fout, "%d\n", nrep);
    exit (0);
}