static void Main(string[] args)
{
string firstDate = Console.ReadLine();
string secondDate = Console.ReadLine();
var dates = new DateModifier();
Console.WriteLine(dates.CalculateDaysDifference(firstDate, secondDate).ToString());
//Problem 4
//List<Person> people = new List<Person>();
//int n = int.Parse(Console.ReadLine());
//for (int i = 0; i < n; i++)
//{
// string[] inputArgs = Console.ReadLine().Split();
// string name = inputArgs[0];
// int age = int.Parse(inputArgs[1]);
// if (age > 30)
// {
// people.Add(new Person(name, age));
// }
//}
//foreach (var person in people.OrderBy(x => x.Name))
//{
// Console.WriteLine($"{person.Name} - {person.Age}");
//}
}
