using System;

public class Program

{

    public static void Main()

    {

        //ximena Galindo Ramos

            int num;

        do 

        {

            ////This will occur at least once

            Console.WriteLine("Write a number higher than 15"); 

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

        }

        while (num <= 15);

        Console.WriteLine("Your number is " + num);

    }

}