using System;

​

public class Program

{

    public static void Main()

    {

        int count = 0, sum = 0, bagrot = -1, magen = -1, difference, bigestdifference = 0;

        while (magen <= 100)

        {

            //קליטת מגן

            while (magen < 0 || magen > 101)

            {

                Console.WriteLine("enter your magen grade: ");

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

            }

​

            if (magen != 101)

            {

                //קליטת בגרות

                while (bagrot < 0 || bagrot > 100)

                {

                    Console.WriteLine("enter your bagrot grade: ");

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

                }

​

                // הפרש בערך מוחלט

                if (magen > bagrot)

                    difference = magen - bagrot;

                else

                    difference = bagrot - magen;

                //חישוב סכום

                sum = sum + difference;

                //חישוב הפרש הגדול

                if (bigestdifference < difference)

                    bigestdifference = difference;

                //הגדלת המונה

                count++;

                //איפוס בגרות

                bagrot = -1;

                magen = -1;

                Console.WriteLine("difference: " + count + ": " + difference);

            }

        }

​

        Console.WriteLine("bigestdifference: " + bigestdifference);

        Console.WriteLine("averge: " + sum / count);

    }

}