using System;

using System.Linq;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("𝐀𝐯𝐚𝐢𝐥𝐚𝐛𝐥𝐞 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐬:");

        List<string> products = new List<string>();

        products.Add("PROTEIN");

        products.Add("CREATINE");

        products.Add("AMINOACIDS");

        products.Add("FISH OIL");

        products.Add("MULTI VITAMIN");

        Console.WriteLine(String.Join("\n", products));

        Console.WriteLine("𝐏𝐥𝐞𝐚𝐬𝐞, 𝐞𝐧𝐭𝐞𝐫 𝐲𝐨𝐮𝐫 𝐝𝐞𝐬𝐢𝐫𝐚𝐛𝐥𝐞 𝐩𝐫𝐨𝐝𝐮𝐜𝐭:");

        string n = Console.ReadLine().ToUpper();

        for (int i = 0; i < products.Count; i++)

        {

            if (n == products[i] && n == products[0])

            {

                Console.WriteLine("79,79€");

                break;

            }

            if (n == products[i] && n == products[1])

            {

                Console.WriteLine("37,99€");

                break;

            }

            if (n == products[i] && n == products[2])

            {

                Console.WriteLine("22,99€");

                break;

            }

            if (n == products[i] && n == products[3])

            {

                Console.WriteLine("9,99€");

                break;

            }

            if (n == products[i] && n == products[4])

            {

                Console.WriteLine("10,99€");

                break;

            }

            else

                Console.WriteLine("no valid product");

            break;

        }

        Console.WriteLine("𝐏𝐥𝐞𝐚𝐬𝐞 𝐞𝐧𝐭𝐞𝐫 𝐡𝐨𝐰 𝐦𝐮𝐜𝐡 𝐲𝐨𝐮'𝐝 𝐥𝐢𝐤𝐞:");

        int m = int.Parse(Console.ReadLine());

        Console.WriteLine("𝐓𝐨𝐭𝐚𝐥:");

        for (int i = 0; i < products.Count; i++)

        {

            if (n == products[i] && n == products[0])

            {

                Console.WriteLine(m * 79.79 + "€");

                break;

            }

            else if (n == products[i] && n == products[1])

            {

                Console.WriteLine(m * 37.99 + "€");

                break;

            }

            else if (n == products[i] && n == products[2])

            {

                Console.WriteLine(m * 22.99 + "€");

                break;

            }

            else if (n == products[i] && n == products[3])

            {

                Console.WriteLine(m * 9.99 + "€");

                break;

            }

            else if (n == products[i] && n == products[4])

            {

                Console.WriteLine(m * 10.99 + "€");

                break;

            }

        }

    }

}