回複:有點問題吧
來源:
botong
於
2009-07-27 11:01:10
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Don't count the way beyond the point. Actually,
The statement should be:
Given a point p between 0 and s = a_1+a_2+...a_n, it
has at most (n-1)! + 1 ways to reach
Sorry for any confusion.