from pwn import *

r = remote('*.*.*.*', 30010)

r.readline()

numbers = []

while True:
	string = r.readuntil(b"\n").decode("utf-8")
	number = string.split(" ")[2].replace(".", "")
	print(number)

	if number in numbers:
		r.sendline(b"y")
	else:
		r.sendline(b"n")
		numbers.append(number)