using System;

​

//Aviel 

public class Program

{

    public static void Main()

    {

        int grade;

        int numOfStudents;

        int sumOfGrades = 0;

        Console.WriteLine("enter num of students");

        numOfStudents = int.Parse(Console.ReadLine());

        for (int i = 0; i<numOfStudents; i++) 

        {

            Console.WriteLine("enter students grades");

            grade = int.Parse(Console.ReadLine());

            sumOfGrades += grade;

        } 

        Console.WriteLine("the average is " + sumOfGrades/numOfStudents);

    }

}