01_party_profit

using System;

namespace demo01_party_profit
{
    class Program
    {
        static void Main()
        {
            int pSize = int.Parse(Console.ReadLine());
            int Days = int.Parse(Console.ReadLine());
            int TotalCoins = 0;
            TotalCoins += Days * 50;
            for (int day = 1; day <= Days; day++)
            {
                if (day % 10 == 0)
                {
                    pSize -= 2;
                }
                if (day % 15 == 0)
                {
                    pSize += 5;
                }
                bool HaveMotivationalParty = false;
                //TotalCoins += 50;
                TotalCoins -= 2 * pSize;
                if (day % 3 == 0)
                {
                    TotalCoins -= pSize * 3;
                    HaveMotivationalParty = true;
                }
                if( day % 5 == 0)
                {
                    TotalCoins += 20 * pSize;
                    if (HaveMotivationalParty == true)
                    {
                        TotalCoins -= pSize * 2;
                    }
                }
                HaveMotivationalParty = false;
                //TotalCoins -= 2 * pSize;
            }
            double received = (double)TotalCoins / (double)pSize;
            double receivedRounded = Convert.ToInt32(Math.Floor(received));
            Console.WriteLine($"{pSize} companions received {receivedRounded} coins each.");
        }