08. Clever Lily (not included in final score)

using System;

namespace Clever_Lily
{
    class Program
    {
        static void Main(string[] args)
        {
            int YearLili = int.Parse(Console.ReadLine());
            double priceWashing = double.Parse(Console.ReadLine());
            double priceGame = double.Parse(Console.ReadLine());

            double total = 0;
            double money = 0;

            for(int i=1;i<= YearLili;i++)
            {
                if(i%2==0)
                {
                    money += 10;
                    total += money;
                    total--;
                }
                else
                {
                    total += priceGame;
                }
            }
            if(total>=priceWashing)
            {
                Console.WriteLine($"Yes! {total - priceWashing:f2}");
            }
            else
            {
                Console.WriteLine($"No! {priceWashing- total:f2}");

            }






        }
    }
}