OJ Board

could anyone give me some critical test case for problem F and answer my question in topic thread below ???

http://online-judge.uva.es/board/viewtopic.php?t=12076

Thanks a lot

Hi ...
I got WA with my code ... could anyone give me some critical test case (input and output)

and i also want to ask this ... if input :
0
1
12
999999
my output:
Not Exist!
Not Exist!
18
1222221

is that correct ???
Thanks a lot