回複:解釋:|OOO|OOOOOOOOOO|O||OOOOO|.....|OOO|||O|OOOOOOOOO|O|

m people and n rooms also right,C(m+n-1,n).

所有跟帖: 

m people and n rooms: C(m+n-1,m), instead of C(m+n-1,n). -皆兄弟也- 給 皆兄弟也 發送悄悄話 皆兄弟也 的博客首頁 (28 bytes) () 06/17/2010 postreply 10:00:40

I'm sorry,I think n=N,at first. -jinjing- 給 jinjing 發送悄悄話 (0 bytes) () 06/17/2010 postreply 15:08:21

請您先登陸,再發跟帖!