Bonus Score

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

namespace ConsoleApplication56
{
    class Program
    {
        static void Main(string[] args)
        {
            var num = int.Parse(Console.ReadLine());
            double BonusPoint=0;
            if (num > 1000)
            {
                BonusPoint = num * 0.10;
            }
            else if (num <= 100)
            {
                BonusPoint = 5;
            }
            else if (num > 100)
            {
                BonusPoint = num * 0.20;
            }
            if(num%10==5)
            {
                BonusPoint += 2;
            }
            else if (num%2==0)
            {
                BonusPoint += 1;
            }
            Console.WriteLine("Bonus score: {0}", BonusPoint);
            Console.WriteLine("Total score: {0}", num + BonusPoint);
        }
    }
}