回复：C(N+n-1,n)
对！此题有点挑战性。请解释下您的答案：C(N+n-1,n)
Blue too busy, I try...
Thanks for your try..., but hard to follow
解释：|OOO|OOOOOOOOOO|O||OOOOO|.....|OOO|||O|OOOOOOOOO|O|
回复：解释：|OOO|OOOOOOOOOO|O||OOOOO|.....|OOO|||O|OOOOOOOOO|O|
m people and n rooms: C(m+n-1,m), instead of C(m+n-1,n).
I'm sorry,I think n=N,at first.
sorry, not smart enough.
回复：sorry, not smart enough.
should be 1111---41,43,34,14 .
it seems i have understood you. you may have solved the problem
Blue_Diamond
2010-06-14 22:23:33回复：C(N+n-1,n)