For Loop - Exercise (04. 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());
            double counter1 = 0;
            double counter2 = 0;
            double counter3 = 0;
            double counter4 = 0;
            double counter5 = 0;

            for (int i = 0; i < n; i++)
            {
                int number = int.Parse(Console.ReadLine());
                if (number < 200)
                {
                    counter1 += 1;
                }
                else if (number >= 200 && number <= 399)
                {
                    counter2 += 1;
                }
                else if (number >= 400 && number <= 599)
                {
                    counter3 += 1;
                }
                else if (number >= 600 && number <= 799)
                {
                    counter4 += 1;
                }
                else if (number >= 800)
                {
                    counter5 += 1;
                }
            }
            double p1 = counter1 / n * 100;
            double p2 = counter2 / n * 100;
            double p3 = counter3 / n * 100;
            double p4 = counter4 / n * 100;
            double p5 = counter5 / n * 100;

            Console.WriteLine($"{p1:F2}%");
            Console.WriteLine($"{p2:F2}%");
            Console.WriteLine($"{p3:F2}%");
            Console.WriteLine($"{p4:F2}%");
            Console.WriteLine($"{p5:F2}%");

        }
    }
}