using System;

public class Program

{

    public static void Main()

    {

        double c,total=0,p,dis;

        char sf,m;

        Console.Write("How many coustomer :");

        c = double.Parse(Console.ReadLine());

        Console.Write("Do you add Sea-Food? : ");

        sf = char.Parse(Console.ReadLine());

        Console.Write("Are you member? :");

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

        if (sf == 'y' || sf == 'Y')

            p = c*299;

            dis = 0.03;

            total = p*dis;

            Console.WriteLine("Total price = {0:n} Baht",total);

        else if (m == 'y' || m == 'Y')

            dis = 0.10;

            total = p*0.10;

            Console.WriteLine("Total price = {0:n} Baht",total);

        else

        Console.WriteLine("Total price = {0:n} Baht",total);

    }

}