using System;

public class Program

{

    public static void Main()

    {

        int year=2016,year2,i,j=0;

        Console.WriteLine("enter i");

        i=Convert.ToInt32(Console.ReadLine());

        year2=year+i;

        for(year=2016;j<=20;year++)

        {

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

            {

            Console.WriteLine("{0} is leap year",year);

                j++;

            }

        }

    }

}