USACO Training Postal Vans Recurrence Formula

Правка en1, от vamaddur, 2018-01-18 02:13:54

http://blog.csdn.net/jiangshibiao/article/details/21446033

Can someone further explain the proof of the formula given in this blog?

Thanks in advance!

Теги combinatorics, #recursion

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en1 Английский vamaddur 2018-01-18 02:13:54 201 Initial revision (published)