It was an ordinary Friday. After a long week Shu decided to relax a little and went to the restaurant. When Shu opened the door, a friendly hostess greeted him and led to an empty table. After some time he chose the dish he wanted to eat and waited for the waitress. 'This place looks great,' - Shu thought. He looked all over the restaurant and saw a few waitresses. He took a note of his observation and came to the conclusion that this might be a restaurant where only girls work as waiters. 'I wonder which one will take my order.' After half a minute someone walked to Shu. He raised his head and surprised a bit. Instead of a waitress, a waiter approached him.