Recently, a new physics teacher has appeared at your school. At first, everyone in the class thought he was irresponsible and therefore did nothing and skipped classes. But you haven't missed a single lesson. Now everyone is in complete shock that the teacher did not give them a credit in their subject. But you got the highest score. While everyone was indignant, he went into the office and began to say loudly "those who did not get a credit cannot correct their current grade! Please leave all dissatisfaction outside of this office!"