05. Supplies for School

using System;

namespace SuppliesForSchool
{
    class Program
    {
        static void Main()
        {
            double penPrice = 5.80;
            double markerPrice = 7.20;
            double detergentPrice = 1.20;

            int penCount = int.Parse(Console.ReadLine());
            int markerCount = int.Parse(Console.ReadLine());
            int detergentCount = int.Parse(Console.ReadLine());
            double discount = int.Parse(Console.ReadLine());

            double totalPrice = (1 - discount / 100) * (penCount * penPrice + markerCount * markerPrice + detergentCount * detergentPrice);

            Console.WriteLine(totalPrice);
        }
    }
}

Леко тарикатската:

using System;

namespace SuppliesForSchool
{
    class Program
    {
        static void Main()
        {
            double penPrice = int.Parse(Console.ReadLine()) * 5.80;
            double markerPrice = int.Parse(Console.ReadLine()) * 7.20;
            double detergentPrice = int.Parse(Console.ReadLine()) * 1.20;
            double discount = int.Parse(Console.ReadLine());

            Console.WriteLine((1 - discount / 100) * (penPrice + markerPrice + detergentPrice));
        }
    }
}

Лоша практика:

using System;

namespace SuppliesForSchool
{
    class Program
    {
        static void Main()
        {
            Console.WriteLine((int.Parse(Console.ReadLine()) * 5.8 + int.Parse(Console.ReadLine()) * 7.2 + int.Parse(Console.ReadLine()) * 1.2) * (1 - double.Parse(Console.ReadLine()) / 100));
        }
    }
}