回複：回複：回複：回複：I'm careless,410 not 411,but the inequolity is good.

來源: 於 2010-06-27 14:37:06 [舊帖] [給我悄悄話] 本文已被閱讀：次

In fact,this question is very simple.If you want to get general anwser,this inequlity is useful.Ex,ther e are n people,i questions,i people got jth Question,...how many people at least get m questions?...