using System;

namespace Equal_Sums_Left_Right_Position
{
    class Program
    {
        static void Main(string[] args)
        {
            int jury = int.Parse(Console.ReadLine());
            string command = Console.ReadLine();
            double sumofAllP = 0;
            int cnt = 0;
            while(command != "Finsih")
            {

                double sumGradesforP = 0;
                for(int i = 1;i <= jury; i++)
                {
                 double grade = double.Parse(Console.ReadLine());
                    cnt++;
                    sumGradesforP += grade;
                    sumofAllP += grade;
                }
                double avgforP = sumGradesforP / jury;
                Console.WriteLine($"{command} - {avgforP:f2}");

                command = Console.ReadLine();



            }

            double arerageforAllP = sumofAllP / cnt;
            if (command == "Finish")
            {
                Console.WriteLine($"Student's final assessment is { arerageforAllP:F2}");
            }
        }
    }
}