using System;

public class Program

{

    public static void Main()

    {

      int y=Convert.ToInt32(Console.ReadLine()),count=0;

        for(int i=y;count<=20;y++)

        { 

            if(y%100==0)

            {

              if(y%400==0)

              {

                  Console.WriteLine("{0}",y);

                  count++;

              }

            }

              else if(y%4==0)

                  {

                  Console.WriteLine("{0}",y);

                  count++;

                  }

        }

    }

}