I can't find mistake in my solution. I have tried many input datas but all answers were correct.
Does that problem have some features or my program is wrong?

Nothing is wrong, i bet!
> I can't find mistake in my solution. I have tried many input datas
but all answers were correct.
> Does that problem have some features or my program is wrong?

 I know. You must write [ 1] instead of [1]!!! :).
 Help me with 1200...

>  I know. You must write [ 1] instead of [1]!!! :).
>  Help me with 1200...

I did it, but I got WA!