text: import requests
  from time import sleep
  import ssl
  ssl._create_default_https_context = ssl._create_unverified_context
  login={
          'username':"504603913",
          'password':"123123123"
  }
  mafengwoSession = requests.session()
  backendurl = "https://www.lpoj.cn/api/login/"
  responseRes = mafengwoSession.post(backendurl,data=login)
  
  def getpro(problemid,ppid):
  
      def substr(start_str, end, html):
          start = html.find(start_str)
          if start >= 0:
              start += len(start_str)
              end = html.find(end, start)
              if end >= 0:
                  aaa = html[start:end].strip()
                  if aaa == "" or aaa is None:
                      aaa = "No data."
                  return aaa
          raise "Error"
  
      userAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36"
      header = {
          'User-Agent': userAgent,
      }
  
  
      Url = "http://acm.hdu.edu.cn/showproblem.php?pid="+problemid
  
      responseRes = requests.get(Url, headers=header)
  
      resstr = f"text = {responseRes.text}"
  
      try:
          titstr = substr("='color:#1A5CC8'>","</h1><font><b>",resstr)
      except:
          print(ppid+" error")
          return 1
  
      try:
          timestr = substr("Time Limit","(Java",resstr)
          timestr = substr("/"," MS",timestr)
      except:
          print(ppid+" error")
          return 1
  
  
      try:
          memstr = substr("Memory L","(Java",resstr)
          memstr = substr("/"," K",memstr)
          memstr = str(int(int(memstr)/1024))
      except:
          print(ppid+" error")
          return 1
  
      try:
          desstr = substr("Description</div> <div class=panel_content>","</div><div class=panel_bottom>",resstr)
      except:
          desstr = "No data."
  
      try:  
          instr = substr("Input</div> <div class=panel_content>","</div><div class=panel_bottom>",resstr)
      except:
          instr = "No data."
          
      try:
          outstr = substr("Output</div> <div class=panel_content>","</div><div class=panel_bottom>",resstr)
      except:
          outstr = "No data."
      try:
          sinstr = substr("ier,monospace;\">","</div></pre></div><div",resstr)
      except:
          sinstr = "No data."
  
      try:
          soutstr = substr("Sample Output</div>","</pre></div><div",resstr)
          soutstr = substr("monospace;\">","</div>",soutstr)
      except:
          soutstr = "No data."
  
      prodata = {
          'problem':ppid,
          'oj':"HDU",
          'title':'HDU - '+str(problemid)+' '+titstr,
          'des':desstr,
          'input':instr,
          'output':outstr,
          'sinput':sinstr,
          'soutput':soutstr,
          'source':str(problemid),
          'time':timestr,
          'memory':memstr,
      }
      prodatas = {
          'problem':ppid,
          'oj':"HDU",
          'title':'HDU - '+str(problemid)+' '+titstr,
          'tag':'HDU',
          'level':3,
      }
  
      
      
      backendurl = "https://www.lpoj.cn/api/problem/"
      responseRes = mafengwoSession.post(backendurl,data=prodata)
      if int(responseRes.status_code/100) != 2:
          print(responseRes.text)
          exit(0)
      backendurl = "https://www.lpoj.cn/api/problemdata/"
      responseRes = mafengwoSession.post(backendurl,data=prodatas)
      if int(responseRes.status_code/100) != 2:
          print(responseRes.text)
          exit(0)
      print('HDU - '+str(problemid)+' '+titstr)
      return 0
  
  # totid = 0
  # for i in range(4):
  #     totid += getpro(str(i+6727),str(i+5763-totid))
  
  # getpro(str(1083),str(189))