using System;

public class Program

{

    public static void Main()

    {

        int goSpeed = 1;

        while (goSpeed < 10 || goSpeed > 50)

        {

        Console.WriteLine("How fast is the go-kart going (between 10 and 50)?");

            goSpeed = Convert.ToInt16(Console.ReadLine());

        }

        double breakingDistance = goSpeed/5;

        Console.WriteLine("Is the ground wet, yes or no?");

        string groundWet = Console.ReadLine();

        if (groundWet == "yes")

        {

        breakingDistance = breakingDistance*5;

        }

        else if (groundWet == "no")

        {

        breakingDistance = breakingDistance;

        }

        else

        {

        Console.WriteLine("Please enter yes or no only");

        }

        Console.WriteLine("Your breaking distance is " + breakingDistance + "km");

    }

}