using System;

namespace _07._Train_The_Trainers
{
    class Program
    {
        static void Main(string[] args)
        {
            int judgesCount = int.Parse(Console.ReadLine());
            double avarageAll = 0;
            int count = 0;

            while (true)
            {
                string presentation = Console.ReadLine();
                if (presentation == "Finish")
                {
                    Console.WriteLine($"Student's final assessment is {avarageAll / count:f2}.");
                    break;
                }
                double avarageRaiting = 0;

                for (int i = 0; i < judgesCount; i++)
                {
                    double evaluation = double.Parse(Console.ReadLine());
                    count++;
                    avarageAll += evaluation;
                    avarageRaiting += evaluation;
                }
                Console.WriteLine($"{presentation} - {avarageRaiting/judgesCount:f2}.");
            }
        }
    }
}