#!/usr/bin/python
import pwn
import re
import time

r = pwn.remote('0c2450d17014ac4e.247ctf.com', 50319)

while not r.can_recv(0):
    time.sleep(0.5)

# can be substituted by True to speed up the process (:
while r.can_recv(0):
    answ = r.recvline().decode('utf-8')
    ns = re.findall("\d{1,4}", answ)
    if len(ns) == 2:
        sum = int(ns[0]) + int(ns[1])
        ans = bytes(str(sum) + '\r\n', 'utf-8')
        r.send(ans)
        time.sleep(0.05)
    else:
        print(answ)