gistfile1.txt

from pwn import *
from Crypto.Util.number import *
p = remote('misc.chal.csaw.io', 4239)
flag = ""
k = 0
data = p.recv().split('\n')[1]
parity = data[9]
data = data[1:9]
if data.count('1') % 2 == parity:
    flag+= long_to_bytes(int(data,2))
    print flag
    k+= 1
else:
    p.sendline("0")

while k < 100:
     data = p.recv()
     parity = int(data[9])
     data = data[1:9]
     if data.count('1') % 2 == parity:
	p.sendline("1")
	flag+= long_to_bytes(int(data,2))
	print flag
	k+= 1
     else:
	p.sendline("0")
print flag