using System;
using Microsoft.VisualBasic;
public class Test
{
	public static void Main()
	{
		DateTime dateBegin = new DateTime(2016,02,27);
		DateTime dateEnd =new DateTime(2017,02,27);
		TimeSpan sp = dateEnd - dateBegin;
		Console.WriteLine(sp.Days);
		if (DateTime.IsLeapYear(dateEnd.Year))
		{
		  if (sp.Days > 366)
		  {
		    Console.WriteLine("Ошибка 365");
		  }
		 }
		 else
		 {
		   if (sp.Days > 365)
		   {
		     Console.WriteLine( "Ошибка 365");
		   }
		 }
	}
}