using System;

namespace Exam_Preparation
{
    class Program
    {
        static void Main(string[] args)
        {
            int maxBadGrades = int.Parse(Console.ReadLine());
            string taskName = Console.ReadLine();
            int taskGrade = int.Parse(Console.ReadLine());
            double countbadGrades = 0;
            int totalTasks = 0;
            totalTasks++;
            double totalScoreGrades = taskGrade;
            string lastTaskName = string.Empty;

            while (maxBadGrades > countbadGrades)
            {
                taskName = Console.ReadLine();
                if (taskName == "Enough")
                {
                    double averageScore = totalScoreGrades / totalTasks;
                    Console.WriteLine($"Average score: {averageScore:F2}");
                    Console.WriteLine($"Number of problems: {totalTasks}");
                    Console.WriteLine($"Last problem: {lastTaskName}"); break;
                }
                totalScoreGrades += taskGrade;
                totalTasks++;
                lastTaskName = taskName;
                if (taskGrade <= 4.00)
                {
                    countbadGrades++;
                }

                if (maxBadGrades == countbadGrades)
                {
                    Console.WriteLine($"You need a break, {maxBadGrades} poor grades."); break;
                }
                taskGrade = int.Parse(Console.ReadLine());
            }
        }
    }
}