using System;

public class Program

{

    public static void Main()

    {

            string statment = "You are " ;

    Console.WriteLine("Which year were you born?"); 

        float bornyear = float.Parse(Console.ReadLine() ) ;

    Console.WriteLine("What year is it now?");

        float rborn = float.Parse(Console.ReadLine() );

        float total = rborn -= bornyear;

            Console.WriteLine(statment + total + " years old.");

    }

}