_username = 'heyue'

_password = ''

username = input("username:")

password = input("password:")

if username == _username and password == _password:

    print("welcome user {name} login...".format(name=_username))

else:

    print("invalid username or password")

_age = 56

age = int(input("guess age:"))

if age == _age:

    print("you got it")

elif age > _age:

    print("think bigger")

else:

    print("think smaller")

_age = 56

count = 0

while count < 3:

    age = int(input("guess age:"))

    if age == _age:

        print("you got it")

        break

    elif age > _age:

        print("think bigger")

    else:

        print("think smaller")

    count +=1

else:

    print("you have tried too much times...")

_age = 56

for i in range(3):

    age = int(input("guess age:"))

    if age == _age:

        print("you got it")

        break

    elif age > _age:

        print("think bigger")

    else:

        print("think smaller")

else:

    print("you have tried too much times...")

_age = 56

count = 0

while count < 3:

    age = int(input("guess age:"))

    if age == _age:

        print("you got it")

        break

    elif age > _age:

        print("think bigger")

    else:

        print("think smaller")

    count +=1

    if count == 3:

        countinue_confirm = input("do you want to keep guessing...")

        if countinue_confirm != 'n':

            count = 0