速度要快

import base64
import requests
s=requests.session()
url='http://117.72.52.127:12829/'
res=s.get(url)
heard=res.headers['flag']
result=base64.b64decode(heard).decode().split(':')[1].replace(" ","")
result=base64.b64decode(result)
response=s.post(url,data={'margin':result})
print(response.text)