Exam04

using System;

namespace Loops
{
    class Program
    {
        static void Main(string[] args)
        {
            int food = int.Parse(Console.ReadLine());
            int days = int.Parse(Console.ReadLine());
            food *= 1000; // grams
            for (int i = 0; i < days; i++)
            {
                int grams = int.Parse(Console.ReadLine());
                food -= grams;
            }
            if (food >= 0)
            {
                Console.WriteLine($"Food is enough! Leftovers: {food} grams.");
            }
            else
            {
                Console.WriteLine($"Food is not enough. You need {-food} grams more.");
            }
        }
    }
}