using System;

public class Program

{

    public static void Main()

    {

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

            double sum = 0;

            double allSum = 0;

            double midleSum = 0;

            int counter = 0;

            string namePresentation = "";

            while (true)

            {

                namePresentation = Console.ReadLine();

                if (namePresentation == "Finish")

                {

                    break;

                }

                for (int i = 1; i <= numberJury; i++)

                {

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

                    sum += evaluation;

                    allSum = sum / numberJury;

                    counter++;

                }                

                Console.WriteLine($"{namePresentation} - {allSum:f2}.");                

            }

            midleSum = sum / counter;

            Console.WriteLine($"Student's final assessment is {midleSum:f2}.");

        }

    }

}