摘要: 传送门: 题意: 求n个点m条边的图里面环的个数 题解: 点的范围只有19,很容易想到是状压。 dp\[sta][a]表示状态为sta,终点为n时环的个数 转移: dp\[sta | (1 include include include include include include include 阅读全文
posted @ 2019-06-18 09:30 buerdepepeqi 阅读(395) 评论(0) 推荐(0) 编辑