using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(LeapYear(2020));

    }

    public static string LeapYear (double a)

    {

        if ( (a % 4 == 0 && (a % 100 != 0 || a % 400 == 0) ) )

            return "true";

        else 

            return "false";

    }

}