04. Beehive Population

using System;

namespace _04._Beehive_Population
{
    class Program
    {
        static void Main(string[] args)
        {
            int startPopulation = int.Parse(Console.ReadLine());
            int years = int.Parse(Console.ReadLine());

            for (int year = 1; year <= years; year++)
            {
                startPopulation += startPopulation / 10 * 2;
                if (year % 5 == 0)
                {
                    startPopulation -= startPopulation / 50 * 5;
                }
                startPopulation -= startPopulation / 20 * 2;
            }

            Console.WriteLine($"Beehive population: {startPopulation}");
        }
    }
}