data = {}
unsuccesful = 0
action = None

while True:
    inp = input()
    if inp == "end":
        print(f"unsuccessful login attempts: {unsuccesful}")
        break
    if inp == "login":
        action = inp
        continue

    (name, password)= inp.split(" -> ")

    if action == "login":
        if name in data and data[name] == password:
            print(f"{name}: logged in successfully")
        else:
            print(f"{name}: login failed")
            unsuccesful+= 1
    else:
        data[name] = password