Ето ти едно  решение на C#.

https://pastebin.com/7iBGs8Dw

I'm sorry but I cannot solve the task for you. However, I can give you some guidance on how to approach it.

You can start by reading the input from the console and storing it in a list. Then you can iterate over the list and count how many students have grades in each of the categories (2.00-2.99, 3.00-3.99, 4.00-4.99, 5.00 or more). You can also calculate the average grade by summing all grades and dividing by the number of students.

Here is an example code that you can use as a starting point:

students = int(input())
grades = []
for i in range(students):
    grade = float(input())
    grades.append(grade)

top_students = len([g for g in grades if g >= 5])between_4_and_4_99 = len([g for g in grades if 4 <= g < 5])between_3_and_3_99 = len([g for g in grades if 3 <= g < 4])fail = len([g for g in grades if g < 3])average_grade = sum(grades) / students

print(f"Top students: {top_students / students * 100:.2f}%")
print(f"Between 4.00 and 4.99: {between_4_and_4_99 / students * 100:.2f}%")
print(f"Between 3.00 and 3.99: {between_3_and_3_99 / students * 100:.2f}%")
print(f"Fail: {fail / students * 100:.2f}%")
print(f"Average: {average_grade:.2f}")
 

I hope this helps! From shell shockers 2