请问执行完以下代码后，输出结果为？
def is_lucky(num):
if num % 6 == 0:
return True
while num > 0:
if num % 10 == 6 or num % 10 == 8:
return True
num /= 10
return False
ls = [13, 666, 888, 32, 332, 987, 555, 345, 876]
cnt = 0
for n in ls:
if is_lucky(n):
cnt += 1
print(cnt)
