using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("A leap year is a calendar year where it contains an extra day in February. It is used to sync up the earth's calendar to the seasons. A leap year occurs every 4 years. Without a leap year, the calendar year would drift away from the solar year and the drift would add up quickly. Leap years were first added to the Julian Calendar in 46 B.C. by Julius Caesar.");

        Console.ReadLine();

        Console.Clear();

        Console.WriteLine("Please enter a year to be told whether it is a leap year or a common year.");

        Console.ReadLine();

    }

}