using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("The 3 grades of the students are:");

        float[,] averageGrade = new float[3,3] {{85,90,78},{92,88,95},{76,84,80}};

        float[] average = new float[3];

        for(int i = 0; i < averageGrade.GetLength(0); i++)

        {

            Console.Write($"Student {i + 1} :");

            for(int j = 0; j < averageGrade.GetLength(1); j++)

            {

                Console.Write($" {averageGrade[i,j]}, ");

                average[i] = average[i] + averageGrade[i,j];

                //Console.WriteLine(sum[i]);

            }

            Console.WriteLine($"- Average Grade: {average[i] / 3}");

        }

    }

}