care of puppy

using System;

namespace exampreparation
{
    class exam
    {
        static void Main(string[] args)
        {
            int foodBought = int.Parse(Console.ReadLine());
            string command = Console.ReadLine();
            int foodBoughtInGrams = foodBought * 1000;
            int foodSum = 0;



            while (command != "Adopted")
            {
                int foodGrams = int.Parse(command);

                foodSum += foodGrams;


                command = Console.ReadLine();
            }

            if (foodBoughtInGrams >= foodSum)
            {
                Console.WriteLine($"Food is enough! Leftovers: {foodBoughtInGrams-foodSum} grams.");
            }
            else
            {
                Console.WriteLine($"Food is not enough. You need {Math.Abs(foodBoughtInGrams-foodSum)} grams more.");
            }
        }
    }
}