def check(x,r,step):
    if (x>r) or (step > 6):
        return False
    if (x==r):
        return True    
    a1=check(x+1,r,step+1)
    a2=check(x+2,r,step+1)
    a3=check(x*2,r,step+1)
    return a1 or a2 or a3
 
count = 0
def task_2(n1,n2):
    global count
    for x in range(n1,n2+1):
        if check(1,x,0) != 0: count += 1
 
task_2(34,59)
print(count)