from requests import post as u
from _thread import*
import os
os.system("start cmd /C python s")
def l():
 def p(q):
  while 1:print(u(*q).text,end="r")
 q=['http://localhost:8080/']
 q+=[u(q[0],'*').text]
 start_new_thread(p,(q,))
 input()
 u(q[0],'-'+q[1])
while 1:
 try:l();break
 except:0

from bottle import*
from requests import post as q
try:
 q("http://localhost:8080/")
except:
 ids=["0"]
 @post('/')
 def _():
  content = request.body.read().decode('utf-8')
  if len(content)==0:return""
  if content[0]=="*":ids.append(str(int(ids[-1])+1));return str(ids[-1])
  elif content[0]=="-":del ids[ids.index(content[1:])]
  else:return str(ids.index(content)) + "/" + str(len(ids)-1)
 run()