static void Main(string[] args)
{
//var person = new Person();
//person.Name = Console.ReadLine();
//person.Age = int.Parse(Console.ReadLine());
//Console.WriteLine($"{person.Name} \n{person.Age}");
//string name = Console.ReadLine();
//int age = int.Parse(Console.ReadLine());
//var personCtor = new Person(age);
//var personCtorName = new Person(name, age);
//Console.WriteLine(personCtor.Name);
//Console.WriteLine(personCtor.Age);
//Console.WriteLine(personCtorName.Name);
//Console.WriteLine(personCtorName.Age);
//FamilyMembers+OldestMember
//var family = new Family();
//int membersCount = int.Parse(Console.ReadLine());
//for (int i = 0; i < membersCount; i++)
//{
// string[] currentMember = Console.ReadLine().Split(" ",StringSplitOptions.RemoveEmptyEntries);
// string name = currentMember[0];
// int age = int.Parse(currentMember[1]);
// family.AddMember(name,age);
//}
//Console.WriteLine();
//Console.WriteLine(family.GetOldestMember());
//Console.WriteLine();
//foreach (var item in family.GetElder())
//{
// Console.WriteLine(string.Join(" ",item.Key,item.Value));
//}
/// dateModifier
string startDate = Console.ReadLine();
string endDate = Console.ReadLine();
var daysDifference = new DateModifier();
Console.WriteLine(Math.Abs(daysDifference.GetDateDifference(startDate, endDate)));
//int carsCount = int.Parse(Console.ReadLine());
//List<Car> cars = new List<Car>();
//for (int i = 0; i < carsCount; i++)
//{
// Car car = new Car();
// string carEntry = Console.ReadLine();
// car.Model = carEntry.Split()[0];
// car.FuelAmount = double.Parse(carEntry.Split()[1]);
// car.FuelConsumptionPerKilometer = double.Parse(carEntry.Split()[2]);
// car.Travelleddistance = 0;
// cars.Add(new Car(car.Model, car.FuelAmount, car.FuelConsumptionPerKilometer, car.Travelleddistance));
//}
//while (true)
//{
// string[] input = Console.ReadLine().Split();
// if (input[0].ToLower() == "end")
// {
// break;
// }
// string carModel = input[1];
// double distance = double.Parse(input[2]);
// Car car = cars.Find(c => c.Model == carModel);
// car.Drive(distance);
//}
//foreach (var car in cars)
//{
// Console.WriteLine(car);
//}
}