using System;

namespace ConsoleApplication
{
    class Program
    {
        static void Main()
        {
            var n = int.Parse(Console.ReadLine());
            int p1 = 0;
            int p2 = 0;
            int p3 = 0;
            int p4 = 0;
            int p5 = 0;

            for (int i = 0; i < n; i++)
            {
                double number = double.Parse(Console.ReadLine());

                if (number >= 0 && number < 22.5)
                {
                    p1++;
                }
                else if (number >= 22.5 && number < 40.5)
                {
                    p2++;
                }
                else if (number >= 40.5 && number < 58.5)
                {
                    p3++;
                }
                else if (number >= 58.5 && number < 76.5)
                {
                    p4++;
                }
                else if (number >= 76.5 && number <= 100)
                {
                    p5++;
                }
            }

            double p1Persents = (p1 * 100.0) / n;
            double p2Persents = (p2 * 100.0) / n;
            double p3Persents = (p3 * 100.0) / n;
            double p4Persents = (p4 * 100.0) / n;
            double p5Persents = (p5 * 100.0) / n;

            Console.WriteLine("{0:f2}% poor marks", p1Persents);
            Console.WriteLine("{0:f2}% satisfactory marks", p2Persents);
            Console.WriteLine("{0:f2}% good marks", p3Persents);
            Console.WriteLine("{0:f2}% very good marks", p4Persents);
            Console.WriteLine("{0:f2}% excellent marks", p5Persents);
        }
    }
}