OkazakiYumemi / okazakiyumemi.github.io

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「CF512D」Fox and Travelling | Okazaki Yumemi's blog #64

Open OkazakiYumemi opened 4 years ago

OkazakiYumemi commented 4 years ago

https://okazakiyumemi.github.io/blog/%E3%80%8CCF512D%E3%80%8DFox-and-Travelling/

题意简述[CF 512D] 给定一张 $n$ 个点 $m$ 条边的简单无向图,每次可以选择一个度数为 $1$ 的点删除,求删去 $0, 1, \dots, n$ 个点的方案数模 $10^9 + 9$。两种方案不同当且仅当二者在某一步选择的点不同。$1\le n\le 100$ 。