Professor Bang is your literature teacher, he is polite and smart, and his students adore him. It's exam time and of course you choose to pass the literature! Today you need to go to Mr. Bang's office to find out the details of the preparation.

You go along the corridor and approach the door to the professor's office. You shake off your clothes, straighten your hair and uncertainly knock two knuckles on the wooden surface. A pleasant baritone was heard from inside.

-Come in.