题目地址：https://buuoj.cn/challenges#%E9%9A%90%E8%97%8F%E7%9A%84%E9%92%A5%E5%8C%99
使用010 editor打开，搜索文本即可得到flag
>>> import base64
>>> base64.b64decode('Mzc3Y2JhZGRhMWVjYTJmMmY3M2QzNjI3Nzc4MWYwMGE=')
b'377cbadda1eca2f2f73d36277781f00a'
>>>
flag{
377cbadda1eca2f2f73d36277781f00a}