04.CatsFood

using System;

namespace ConsoleApp3
{
    internal class Program
    {
        static void Main(string[] args)
        {
            //INPUT
            int numberCats = int.Parse(Console.ReadLine());

            //CHANGEABLE INPUT
            double currentGramsFoodEaten = 0;
            double gramsFoodSum = 0;
            int littleKittensCount = 0;
            int bigCatsCount = 0;
            int massiveCatsCount = 0;

            //CALCULATIONS
            for (int i = 1; i <= numberCats; i++)
            {
                currentGramsFoodEaten = double.Parse(Console.ReadLine());
                gramsFoodSum += currentGramsFoodEaten;

                //Sizes
                if (currentGramsFoodEaten >= 100 && currentGramsFoodEaten < 200)
                {
                    littleKittensCount++;
                }
                else if (currentGramsFoodEaten >= 200 && currentGramsFoodEaten < 300)
                {
                    bigCatsCount++;
                }
                else if (currentGramsFoodEaten >= 300 && currentGramsFoodEaten < 400)
                {
                    massiveCatsCount++;
                }
            }

            double kilogramsFoodPerDay = gramsFoodSum / 1000;
            double averageFoodPerDay = kilogramsFoodPerDay * 12.45;

            //OUTPUT
            Console.WriteLine($"Group 1: {littleKittensCount} cats.");
            Console.WriteLine($"Group 2: {bigCatsCount} cats.");
            Console.WriteLine($"Group 3: {massiveCatsCount} cats.");
            Console.WriteLine($"Price for food per day: {averageFoodPerDay:f2} lv.");
        }
    }
}