External evaluation

using System;

namespace ConsoleApp125
{
    class Program
    {
        static void Main(string[] args)
        {
                        var n = double.Parse(Console.ReadLine());
            var p2 = 0;
            var p3 = 0;
            var p4 = 0;
            var p5 = 0;
            var p6 = 0;
            for (int i = 0; i < n; i++)
            {

                    var tochki = double.Parse(Console.ReadLine());

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

                    else if (tochki > 76.5 && tochki <= 100)
                    {
                        p6++;
                    }
                }
                var slab = (p2 / n) * 100.0;
                var sreden = (p3 / n) * 100.0;
                var dobur = (p4 / n) * 100.0;
                var mndobur = (p5 / n) * 100.0;
                var otlichen = (p6 / n) * 100.0;
                Console.WriteLine("{0:f2}% poor marks", slab);
                Console.WriteLine("{0:f2}% satisfactory marks", sreden);
                Console.WriteLine("{0:f2}% good marks", dobur);
                Console.WriteLine("{0:f2}% very good marks", mndobur);
                Console.WriteLine("{0:f2}% excellent marks", otlichen);
        }
    }
}