using System;

namespace _04.FoodForPets
{
    class Program
    {
        static void Main(string[] args)
        {
            int sumDogEats = 0;
            int sumCatEats = 0;
            double sumBisquits = 0;

            int numDays = int.Parse(Console.ReadLine());
            double allFood = double.Parse(Console.ReadLine());

            for (int countDays = 1; countDays <= numDays; countDays++)
            {
                int dogEatsDay = int.Parse(Console.ReadLine());
                int catEatsDay = int.Parse(Console.ReadLine());
                sumDogEats += dogEatsDay;
                sumCatEats += catEatsDay;
                if (countDays % 3 == 0)
                {
                    sumBisquits += Math.Round((dogEatsDay + catEatsDay) * 0.1);
                }
            }
            int totalEatenFood = sumDogEats + sumCatEats;
            Console.WriteLine($"Total eaten biscuits: {sumBisquits}gr.");
            Console.WriteLine($"{1.0 * totalEatenFood / allFood * 100:F2}% of the food has been eaten.");
            Console.WriteLine($"{1.0 * sumDogEats / totalEatenFood * 100:F2}% eaten from the dog.");
            Console.WriteLine($"{1.0 * sumCatEats / totalEatenFood * 100:F2}% eaten from the cat.");
        }
    }
}