using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Is it the weekend? Write Y or N");

        string weekend= Console.ReadLine();

        double temp;

        bool tempChance= false;

            while (tempChance== false){

            Console.WriteLine("What is the temp?");

                temp=Convert.ToDouble(Console.ReadLine());

                if((temp <=45) && (temp>=20)) 

                {

                tempChance= true;

                }

                else {

                tempChance= false;

                    Console.WriteLine("pls enter a valid number");

                }

            }

        int icecream;

        if ((temp >=20) &&(temp<= 30)){

        icecream=200;

        }

        else if ((temp>=31)&&(temp<= 88))

        {

        icecream=150;

        }

        else {

        icecream=120;

        }

        if (weekend == "y"){

        icecream= icecream*2;

            Console.WriteLine("there will be " + icecream + " ice cream sold");

        }

        else {

        Console.WriteLine("there will be " + icecream + " ice cream sold");

        }

    }

}