IzpitnaStatistika_Exercise04

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace claswork
{
    class Program
    {
        static void Main(string[] args)
        {
            int studentsNum = int.Parse(Console.ReadLine());
            int two = 0;
            int three = 0;
            int four = 0;
            int excellent = 0;
            double totalScore = 0;

            for (int i = 1; i <= studentsNum; i++)
            {
                double grade = double.Parse(Console.ReadLine());
                totalScore += grade;

                if(grade >= 2.00 && grade <= 2.99)
                {
                    two++;
                }
                else if(grade >= 3.00 && grade <= 3.99)
                {
                    three++;
                }
                else if(grade >= 4.00 && grade <= 4.99)
                {
                    four++;
                }
                else if(grade >= 5.00 && grade <= 6.00)
                {
                    excellent++;
                }
            }

            double failPercentage = (two / (double)studentsNum) * 100;
            double threePercentage = (three / (double)studentsNum) * 100;
            double fourPercentage = (four / (double)studentsNum) * 100;
            double excellentPercentage = (excellent / (double)studentsNum) * 100;
            double average = totalScore / studentsNum;

            Console.WriteLine("{0:f2}%", excellentPercentage);
            Console.WriteLine("{0:f2}%", fourPercentage);
            Console.WriteLine("{0:f2}%", threePercentage);
            Console.WriteLine("{0:f2}%", failPercentage);
            Console.Write("{0:f2}", average);
        }
    }
}