using System;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello, please write your first name");

        string name = Console.ReadLine();

        Console.WriteLine("please name your weight in kilograms");

        string w = Console.ReadLine();

        double weight = double.Parse(w);

        Console.WriteLine("please name your height in meters");

        string h = Console.ReadLine();

        double height = double.Parse(h);

        Console.WriteLine("Welcome {0}!", name);

        Console.WriteLine("Your BMI is {0}", (weight / (height * height)));

    }

}