https://judge.softuni.bg/Contests/Practice/Index/354#1
 

using System;

public class Program
{
    public static void Main()
    {
        int a = int.Parse(Console.ReadLine());
        int b = int.Parse(Console.ReadLine());
        double c = double.Parse(Console.ReadLine());
        double x = double.Parse(Console.ReadLine());
        double y = double.Parse(Console.ReadLine());

        double dogfood = a * c;
        double catfood = a * x;
        double turtlefood = a * y / 1000;

        double area = dogfood + catfood + turtlefood;
        if(area<b)
        {
            double needed = b - area;
               
            Console.WriteLine(" {0} kilos of food left. ", Math.Floor(needed));
        }
        if (area>b)
        {
            double needed1 = area - b;
            
            Console.WriteLine(" {0} more kilos of food are needed. ", Math.Ceiling(needed1));
        }
        Console.ReadKey();
    }
        
}



Получавам 90/100 точки, може ли някой да ми подскаже къде е проблема?