def div_by_all(nr: int) -> bool:
    digits = nr
    for i in range(1, 7):
        digit = digits % (10**i)
        if nr % (digit // (10 ** (i - 1))) != 0:
            return False
        digits -= digit
    return True


low, high = map(int, input().split())

if low % 2 == 1:
    low += 1

total = 0

for i in range(low, high + 1, 2):
    u = set(str(i))
    if len(u) != len(str(i)):
        continue
    if "0" in u:
        continue

    if div_by_all(i):
        total += 1

print(total)