标准错误流
Traceback (most recent call last):
File "/sandbox/2/a.py", line 4, in <module>
if s1.find('3') and s1.find('4') and s1.find('9') and s1.find('6'):
AttributeError: 'list' object has no attribute 'find'
Special Judge 信息
Files user_out and answer differ
系统信息
Exited with return code 1