#!/usr/bin/env python

from socket import *
from struct import *

s = socket(AF_INET, SOCK_STREAM)
s.connect(('vortex.labs.overthewire.org', 5842))

somma = 0

for _ in range(4):
    dati = unpack("<I",s.recv(4))[0]
    print dati
    somma += dati
    print somma

s.send(pack("<I",somma))
print s.recv(1024)
s.close()