#!/usr/bin/python

from socket import *
from struct import *
import struct

bit = struct.calcsize("P") * 8

if (bit ==32):
    porta=24000
else:
    porta=24001

s = socket(AF_INET, SOCK_STREAM)
s.connect(('semtex.labs.overthewire.org', porta))


f=open('file','wb')
i=1
while 1:
    a = s.recv(1)
    if (i%2 == 0):
        i += 1
    else:
        if not a:
            break;
        else:
            i += 1
            f.write(a)
f.close()
print i
s.close()