03. New House

using System;

namespace NewHouse
{
    class Program
    {
        static void Main(string[] args)
        {
            string flowers = Console.ReadLine();
            int num = int.Parse(Console.ReadLine());
            double budget = double.Parse(Console.ReadLine());
            double sum = 0;

            switch (flowers)
            {
                case "Roses":
                    sum = num * 5;
                    if (num > 80)
                    {
                        sum *= 0.9;
                    }
                    break;
                case "Dahlias":
                    sum = num * 3.8;
                    if (num > 90)
                    {
                        sum *= 0.85;
                    }
                    break;
                case "Tulips":
                    sum = num * 2.8;
                    if (num > 80)
                    {
                        sum *= 0.85;
                    }
                    break;
                case "Narcissus":
                    sum = num * 3;
                    if (num < 120)
                    {
                        sum *= 1.15;
                    }
                    break;
                case "Gladiolus":
                    sum = num * 2.5;
                    if (num < 80)
                    {
                        sum *= 1.2;
                    }
                    break;
            }
            if (budget >= sum)
            {
                Console.WriteLine($"Hey, you have a great garden with {num} {flowers} and {budget - sum:F2} leva left.");
            }
            else
            {
                Console.WriteLine($"Not enough money, you need {sum - budget:F2} leva more.");
            }
        }
    }
}

РЕШЕНИЕ С ТЕРНАРЕН ОПЕРАТОР:

using System;

namespace NewHouse
{
    class Program
    {
        static void Main(string[] args)
        {
            string flowers = Console.ReadLine();
            int num = int.Parse(Console.ReadLine());
            double budget = double.Parse(Console.ReadLine());

            budget -= ( flowers == "Roses" ? (num > 80 ? 4.5 : 5)
                      : flowers == "Dahlias" ? (num > 90 ? 3.23 : 3.8)
                      : flowers == "Tulips" ? (num > 80 ? 2.38 : 2.8)
                      : flowers == "Narcissus" ? (num < 120 ? 3.45 : 3)
                      : flowers == "Gladiolus" ? (num < 80 ? 3 : 2.5) : 0) * num;

            Console.WriteLine(budget < 0 ? $"Not enough money, you need {Math.Abs(budget):F2} leva more."
                                         : $"Hey, you have a great garden with {num} {flowers} and {budget:F2} leva left.");

        }
    }
}