using System;

namespace Train_the_Trainers
{
    class Program
    {
        static void Main(string[] args)
        {


            int n = int.Parse(Console.ReadLine());
            decimal grade = 0.0m;
            decimal avg = 0.0m;
            decimal avgGrade = 0.0m;
            int Nstudents = 0;

            string input = string.Empty;
            string subject = string.Empty;


            while (input != "Finish")
            {
                subject = Console.ReadLine();
                avgGrade = 0;

                if (input == "Finish" || subject == "Finish")
                {
                    break;
                }

                for (int i = 0; i < n; i++)
                {

                   input = Console.ReadLine();
                        grade = decimal.Parse(input);

                    avgGrade += grade / n;
                        avg += grade;


                    Nstudents++;
                }

                Console.WriteLine($"{subject:f2} - {avgGrade:f2}.");
            }

            avg /= Nstudents;
            Console.WriteLine($"Student's final assessment is {avg:f2}.");

        }
    }
}