using System;

public class Program

{

    public static void Main()

    {

        double studentID;

        double mat1;

        double mat2;

        double mat3;

        double mat4;

        double mat5;

        double result;

        double average; 

    Console.WriteLine("Enter the student ID" );

        studentID = Convert.ToDouble(Console.ReadLine());

        Console.WriteLine("Enter the mat1" );

        mat1 = Convert.ToDouble(Console.ReadLine());

        Console.WriteLine("Enter the mat2" );

        mat2 = Convert.ToDouble(Console.ReadLine());

        Console.WriteLine("Enter the mat3" );

        mat3 = Convert.ToDouble(Console.ReadLine());

        Console.WriteLine("Enter the mat4" );

        mat4 = Convert.ToDouble(Console.ReadLine());

        Console.WriteLine("Enter the mat5" );

        mat5 = Convert.ToDouble(Console.ReadLine());

         result = mat1 + mat2 + mat3 + mat4 + mat5 ; 

        average = result / 5 ;

        Console.WriteLine("The average is  " + average) ;

    }

}