#!/usr/bin/python3
import socket
import re

client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect(('198.45.10.1', 4444))

while True:
    data = b''
    while True:
        chunk = client.recv(10240)
        data += chunk
        if len(chunk) < 10240:
            break
        #client.send("cdc{I_hope_you_scripted_this}")

        # our flag contains cdc, once it's revealed print recevied data and exit
    if '{' in data.decode('utf-8'):
        print(data.decode('utf-8'))
        break

        # \d+ matches a digit (equal to [0-9])
        # .{3} matches any  character, except line terminators exactly three times
    m = re.search('\d+.{3}\d+', data.decode('utf-8'))
    if m == None:
        print(m)
    expression = m.group(0)


        #properly handle division
    if '/' in expression:
        expression = expression.replace('/', '//')

    result = eval(expression)

        #print results to screen to see script progress
    print(expression + ' = ' + str(result))
    #print result
        #encode and transfer
    data = str(result).encode('utf-8') + b'\n'
    client.send(data)