using System;

public class Program
{
	public static void Main()
	{
		    int judges = int.Parse(Console.ReadLine());
            double allPresentationGrade = 0.0;
            double gradeCounter = 0.0;
            while (true)
            {
                string presentation = Console.ReadLine();
                double presentationScore = 0.0;
                if (presentation == "Finish")
                {
                    double gradeSum = allPresentationGrade / gradeCounter;
                    Console.WriteLine("Student's final assessment is " + gradeSum);
                    break;
                }
                for (int i = 0; i < judges; i++)
                {
                    double grade = double.Parse(Console.ReadLine());
                    presentationScore += grade;
                    allPresentationGrade += grade;
                    gradeCounter++;
                }
                double presentationCurrentGrade = presentationScore / judges;
                Console.WriteLine(presentation+" - "+presentationCurrentGrade +".");
            }

        }
  }