m people and n rooms also right,C(m+n-1,n).
回複:解釋:|OOO|OOOOOOOOOO|O||OOOOO|.....|OOO|||O|OOOOOOOOO|O|
所有跟帖:
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m people and n rooms: C(m+n-1,m), instead of C(m+n-1,n).
-皆兄弟也-
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06/17/2010 postreply
10:00:40
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I'm sorry,I think n=N,at first.
-jinjing-
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06/17/2010 postreply
15:08:21