using System;

public class Program

{

    public static void Main(string[] args)

    {

        string n;

        double p, m, f, ave;

        Console.Write("Student Name: ");

        n=Console.ReadLine();

        Console.Write("Prelim Grade: ");

        p= double.Parse(Console.ReadLine());

        Console.Write("Midterm Grade: ");

        m= double.Parse(Console.ReadLine());

        Console.Write("Final Grade: ");

        f= double.Parse(Console.ReadLine());

        ave= (p + m + f) / 3;

        Console.Write("\nHi " + n + " Your Average grade is " +ave);

    }

}