try  XOR operation, 0 stand for WHITE , 1 stand for BLACK
by the way , my outputfile is Case #1: , but i cannot submit my file,

Can you show me how to solve this problem?
2008/9/20 [EMAIL PROTECTED] <[EMAIL PROTECTED]>

>
>  Hi All of you
>  I would like to know the  algorithm used to solve the problem of the
> 'old magician'(Question no1) that was in the practice test held on
> saturday.I hope you may help me with this.
>
> >
>


-- 
%TONAME,您好!
%CURSOR
致
礼!
%DATE
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