using System;
public class Program
{
public static void Main()
DateTime birthDate = new DateTime(2000, 2, 29);
DateTime now = new DateTime(2009, 2, 28);
int age = now.Year - birthDate.Year;
if (now < birthDate.AddYears(age))
//if(now <= new DateTime(birthDate.Year, birthDate.Month, birthDate.Day))
//if (now.Month < birthDate.Month || (now.Month == birthDate.Month && now.Day < birthDate.Day))
age--;
System.Console.WriteLine(age);
}