exam submissions

using System;

namespace exampreparation
{
    class exam
    {
        static void Main(string[] args)
        {
            int students = int.Parse(Console.ReadLine());
            int problems = int.Parse(Console.ReadLine());

            double submissions = Math.Ceiling(problems * 2.8);
            double answers = students * submissions;
            double extraAnswers = students * Math.Floor(problems / 3.0);

            double allAnswers = answers + extraAnswers;

            double memory = 5 * Math.Ceiling(allAnswers / 10);

            Console.WriteLine($"{memory} KB needed");
            Console.WriteLine($"{allAnswers} submissions");
        }
    }
}