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public enum GradeLevel { FirstYear = 1, SecondYear, ThirdYear, FourthYear }; public class Student { public required string FirstName { get; init; } public required string LastName { get; init; } public required int ID { get; init; } public required GradeLevel Year { get; init; } public required List<int> Scores { get; init; } public required int DepartmentID { get; init; } } public class Teacher {
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