using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Give me a sentence, and I'll tell you which are numeric.");

        double number;

        string line = Console.ReadLine();

        foreach (string word in line.Split(' '))

            if (double.TryParse(word, out number))

                Console.WriteLine(number + " is a number, twice that number is " + number * 2);

            else

                Console.WriteLine("'" + word + "' is not a number.");

    }

}