The question should be changed to that if you get $10^n,if you want more, you have to pick a given number from 1,2.....2^(n+1).if you can't you get 0.
$1,$10,$100,換,否則不換.
所有跟帖:
• misunderstood question,please read bottom. -jinjing- ♀ (0 bytes) () 06/19/2010 postreply 08:24:04