try:
    if user not in user_ips:
        if match.group(2) not in msg_ips:
            print("wrong output")
            sys.exit()
        user_ip = msg_ips[match.group(2)]
        user_ips[user] = user_ip
        ip_users[user_ip] = user
    if msg != user_last_decoded[user]:
        user_last_decoded[user] = msg
        print(user, "==>", msg.strip("\n"))
except:
    print("wrong output")
    sys.exit()

# result: wrong output

try:
    if user not in user_ips:
        if match.group(2) not in msg_ips:
            print("wrong output")
            sys.exit()
        user_ip = msg_ips[match.group(2)]
        user_ips[user] = user_ip
        ip_users[user_ip] = user
except:
    print("wrong output")
    sys.exit()
if msg != user_last_decoded[user]:
    user_last_decoded[user] = msg
    print(user, "==>", msg.strip("\n"))

# result: dies

if user not in user_ips:
    if match.group(2) not in msg_ips:
        print("wrong output")
        sys.exit()
    user_ip = msg_ips[match.group(2)]
    user_ips[user] = user_ip
    ip_users[user_ip] = user
try:
    if msg != user_last_decoded[user]:
        user_last_decoded[user] = msg
        print(user, "==>", msg.strip("\n"))
except:
    print("wrong output")
    sys.exit()

# result: dies