static void Main(string[] args)
{
string first = Console.ReadLine();
string second = Console.ReadLine();
int days = DateModifier.CalculateDifferenceInDays(first, second);
Console.WriteLine(days);
}
static void Main(string[] args)
{
string firstDate = Console.ReadLine();
string secondDate = Console.ReadLine();
DateModifier dateModifier = new DateModifier(firstDate, secondDate);
Console.WriteLine(Math.Abs(dateModifier.CalculateDifferenceInDays()));
}