using System;

namespace Train_The_Trainers
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            string input = Console.ReadLine();
            //double prezentationEV = 0;
            int prezentionnum = 0;
            double evaluetion = 0;
            string prezeteishenname;
            while (input != "Finish") // Finish !!!
            {
                double prezentationEV = 0; // must be set to 0 inside of while loop
                prezeteishenname = input;
                for (int i = 1; i <= n; i++)
                {
                    prezentationEV += double.Parse(Console.ReadLine());
                }
                prezentationEV = prezentationEV / n;
                evaluetion += prezentationEV;

                Console.WriteLine($"{prezeteishenname} - {prezentationEV:F2}.");
                prezentionnum++;
                input = Console.ReadLine();

            }

            Console.WriteLine($"Student's final assessment is {evaluetion / prezentionnum:F2}.");
        }
    }
}