Bils

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Bils
{
    class Program
    {
        static void Main(string[] args)
        {
            int weeks = int.Parse(Console.ReadLine());

            double sum = 0.00;
            for (int i = 0; i < weeks; i++)
            {
                double electricityBill = double.Parse(Console.ReadLine());
                sum += electricityBill;
            }

            int water = weeks * 20;
            int internet = weeks * 15;
            var other = sum + water + internet * 0.20;
            double average = sum + water + internet + other / weeks;

            Console.WriteLine($"Electricity: {sum:f2} lv");
            Console.WriteLine($"Water:{water:f2} lv");
            Console.WriteLine($"Internet: {internet:F2} lv");
            Console.WriteLine($"Other: {other:f2} lv");
            Console.WriteLine($"Average: {average:f2} lv");
        }
    }
}