Histogram

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

namespace Histogram
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int[] arr = new int[n];
            double a = 0.0;
            double b = 0.0;
            double c = 0.0;
            double d = 0.0;
            double e = 0.0;
            for (int i = 0; i < n; i++)
            {
                arr[i] = int.Parse(Console.ReadLine());
            }
            for (int i = 0; i < arr.Length; i++)
            {
                if (arr[i] >= 1 && arr[i] < 200)
                {
                    a++;
                }
                else if (arr[i] >= 200 && arr[i] < 400)
                {
                    b++;
                }
                else if (arr[i] >= 400 && arr[i] < 600)
                {
                    c++;
                }
                else if (arr[i] >= 600 && arr[i] < 800)
                {
                    d++;
                }
                else
                {
                    e++;
                }
            }
            double p1 = (a / n) * 100;
            double p2 = (b / n) * 100;
            double p3 = (c / n) * 100;
            double p4 = (d / n) * 100;
            double p5 = (e / n) * 100;
            Console.WriteLine("{0:0.00}%", p1);
            Console.WriteLine("{0:0.00}%", p2);
            Console.WriteLine("{0:0.00}%", p3);
            Console.WriteLine("{0:0.00}%", p4);
            Console.WriteLine("{0:0.00}%", p5);
        }
    }
}