It's trivial when we notice that with c1=1 the program simply accepts the message from c2.We put c1=1 and c2="something#overlord" and we get the flag.```#!/usr/bin/env python2
from pwn import *import binascii
p = remote("35.197.255.108", "1337")p.sendline("1")p.sendline("1" + binascii.hexlify("easy#overlord"))print(p.recvuntil("here."))*```