using System;

public class Program

{

    public static void Main()

    {

        //Ana Cecilia Henández Mireles 

        int a;

        Console.WriteLine("Hello! How old are you?");

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

        if ( a >= 16)

        {

            Console.WriteLine("Welcome!");

        }

        else

        {

            Console.WriteLine("Sorry, this page is only for people 16 or older.");

        }

    }

}