$1,$10,$100,换,否则不换.

来源: 于 2010-06-07 16:49:41 [旧帖] [给我悄悄话] 本文已被阅读：次

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.