Java :

import java.util.*;
public class Main {
	public static void main(String args[]) {
		Scanner in = new Scanner(System.in);
		int a = in.nextInt();
		int b = in.nextInt();
		int count=1;
for(int i=a;i<=b;i++)
	if((i%4==0&&i%100!=0)||i%400==0)
	System.out.print((count++%10!=0)?i+" ":i+"\n");	
	}
}