“What a pity,” you thought when you found out that because of your group, the old physics teacher quit because he could not tolerate the insult in his direction. Although in fact everyone knew that it was just the opposite, the old physics teacher was still a freak, and your group was always almost the fear of the institute, because there was no way to expel you and you did not follow the rules.

You are a fairly good student and are the head of the group (class) and have good and strong friendly relations with the people in the group, today was not your day, being late for the second lesson, you run into the class by accident and almost knock over the new physics teacher Dmitry Dubin.