using System;

public class Program

{

    public static void Main()

    {

        int x = 1;

        int count = 1;

        int mark;

        int markOver50 = 0;

        int numStudents;

        int sum = 0;

        string name;

        string highestName = "";

        double mean = 0;

        double max = -9999;

        Console.WriteLine("How many students are there?");

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

        for (x = 1; x <= numStudents; x++)

         {

            sum = 0;

            Console.WriteLine("What is the name of student number {0}?", x);

            name = Console.ReadLine();

            for (count = 1; count <= 5; count++)

             {

                Console.WriteLine("Enter mark number {0}: ", count);

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

                while ((mark > 100) || (mark < 0))

                 {

                  Console.WriteLine("Invalid mark entered");

                  Console.WriteLine("Enter mark number {0}: ", count);

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

                 }

                if (mark >= 50)

                    markOver50++;

                sum = sum + mark;

                mean = sum / count;

             }

            if (mean > max)

             {

                max = mean;

                highestName = name;

             }

         }

        Console.WriteLine("The learner with the highest average is {0} with an average of {1}", highestName, max);

        Console.WriteLine("There are {0} marks greater than or equal to 50", markOver50);

        Console.ReadLine();

    }

}