Knight

重链剖分真可爱，数据结构真可爱。 tags： \(\text{data structures}\) \(\text{trees}\) $\color{red}{*2900} $ 洛谷 CF 给出一棵 \(n\) 个点的树，初始所有点为白色。还有 \(q\) 次操作，第 \(i\) 个操作发生在第 \ ......

There is a knight on an n x n chessboard. In a valid configuration, the knight starts at the top-left cell of the board and visits every cell on the b ......

Problem Description A friend of you is doing research on the Traveling Knight Problem (TKP) where you are to find the shortest closed tour of knight m ......

[ 提交 ] [状态] 题目描述 The knight is getting bored of seeing the same black and white squares again and again and has decided to make a journey around the w ......

（提醒：原题面是 $m$ 行 $n$ 列，这里改成了 $n$ 行 $m$ 列） 首先很好想到设 $dp_{u,v}$ 为 $(u, v)$ 的期望步数 $dp_{u, v} = \begin{cases}\sum_{i=1}^4 dp_{u + du_i,v + dv_i}\times p_i& ( ......