import random, time
import string
import base64
from pwn import *

def otp(a, b):
    r = ""
    for i, j in zip(a, b):
        r += chr(ord(i) ^ ord(j))
    return r


def genSample():
    p = ''.join([string.ascii_letters[random.randint(0, len(string.ascii_letters)-1)] for _ in range(random.randint(1, 30))])
    k = ''.join([string.ascii_letters[random.randint(0, len(string.ascii_letters)-1)] for _ in range(len(p))])

    x = otp(p, k)

    return x, p, k


# s = process(argv=['python', 'server.py'])
s = remote('misc.2020.chall.actf.co', 20301)
s.recvuntil(b'> ')
s.sendline(b'2')
s.recvuntil(b'Your answer:')
random.seed(int(time.time()))
x, p, k = genSample()
s.sendline(p.encode('ascii'))
print(s.recvline())
s.close()