using System;

namespace ConsoleApp12
{
    class Program
    {
        static void Main(string[] args)
        {
            double expNeeded = double.Parse(Console.ReadLine());
            int countBattles = int.Parse(Console.ReadLine());
            double currentExp = 0;

            for(int i=1; i<=countBattles; i++)
            {
                double expPerBattle = double.Parse(Console.ReadLine());
                bool isThird = false, isFifth = false;
                if (i % 3 == 0) isThird = true;
                if (i % 5 == 0) isFifth = true;

                if (isThird && isFifth) currentExp += expPerBattle * 1.05; // samo 5% bonus
                else if (isThird) currentExp += expPerBattle * 1.15; // bonus 15%
                else if (isFifth) currentExp += expPerBattle * 0.90; // minus 10%
                else currentExp += expPerBattle;

                if (currentExp >= expNeeded)
                {
                    Console.WriteLine($"Player successfully collected his needed experience for {i} battles.");
                    break;
                }
            }

            if(expNeeded > currentExp) Console.WriteLine($"Player was not able to collect the needed experience, {(expNeeded - currentExp):F2} more needed.");

            Console.ReadKey();
        }
    }
}