demo

using System;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            int days = int.Parse(Console.ReadLine());
            double startKm = double.Parse(Console.ReadLine());
            double sumKm = startKm;

            for (int i = 1; i <= days; i++)
            {
                double percents = double.Parse(Console.ReadLine());
                double runnedKm = startKm * (percents / 100);
                startKm += runnedKm;
                sumKm += startKm;

            }

            if (sumKm >= 1000)
            {
                Console.WriteLine($"You've done a great job running {Math.Round(sumKm-1000)+1} more kilometers!");
            }
            else
            {
                Console.WriteLine($"Sorry Mrs. Ivanova, you need to run {Math.Round(1000-sumKm)+1} more kilometers!");
            }
        }
    }
}