6
15
2016
0

【UER #5C】万圣节的糖果

题意:

将1~n分到m个非空集合中,使得每个集合中(排序后)相邻的数奇偶性均不相同。求划分的方案数。

 

Category: 树套树 | Tags: | Read Count: 165

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