Tempter of the Bone Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 82702    Accepted Submission(s): 22531 Problem Description The doggie found a bone in an ancient maze, which fascinated him a…

Tempter of the Bone Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 92175    Accepted Submission(s): 25051 Problem Description The doggie found a bone in an ancient maze, which fascinated him a…

M - Tempter of the Bone Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Description The doggie found a bone in an ancient maze, which fascinated him a lot. However, when he picked it up, the maze began to shake, and the d…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1010 Tempter of the Bone Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 131057    Accepted Submission(s): 35308 Problem Description The doggie fou…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1010 题目大意: 输入 n m t,生成 n*m 矩阵,矩阵元素由 ‘.’ 'S' 'D' 'X' 四类元素组成. S'代表是开始位置: 'D'表示结束位置:'.'表示可以走的路:'X'表示是墙. 问:从‘S’  能否在第 t 步 正好走到 'D'. 解题思路: 平常心态做dfs即可,稍微加个奇偶剪枝,第一次做没经验,做过一次下次就知道怎么做了.最后有代码注释解析. AC Code: #includ…

http://acm.hdu.edu.cn/showproblem.php?pid=1010   //题目链接 http://ycool.com/post/ymsvd2s//一个很好理解剪枝思想的博客 http://blog.csdn.net/chyshnu/article/details/6171758//一个很好举例的博客 Problem Description The doggie found a bone in an ancient maze, which fascinated him…

学习链接:http://www.ihypo.net/1554.html https://www.slyar.com/blog/depth-first-search-even-odd-pruning.html http://blog.csdn.net/chyshnu/article/details/6171758 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1010 题解:刚开始写直接超时,还没学剪枝,奇偶剪枝... 关于奇偶剪枝 首先举个例子,有…

Tempter of the Bone Time Limit: / MS (Java/Others) Memory Limit: / K (Java/Others) Total Submission(s): Accepted Submission(s): Problem Description The doggie found a bone in an ancient maze, which fascinated him a lot. However, when he picked it up,…

题目链接:pid=1010">点击打开链接 题目描写叙述:给定一个迷宫,给一个起点和一个终点.问是否能恰好经过T步到达终点?每一个格子不能反复走 解题思路:dfs+剪枝 剪枝1:奇偶剪枝,推断终点和起点的距离与T的奇偶性是否一致,假设不一致,直接剪掉 剪枝2:假设从当前到终点的至少须要的步数nt加上已经走过的步数ct大于T,即nt+ct>t剪掉 剪枝3:假设迷宫中能够走的格子小于T直接剪掉 启示:剪枝的重要性 代码: #include <cstdio> #include…

http://acm.hdu.edu.cn/showproblem.php?pid=1010 这题就是问能不能在t时刻走到门口,不能用bfs的原因大概是可能不一定是最短路路径吧. 但是这题要过除了细心外,还需要强力的剪枝. 奇偶性剪枝:参考 http://www.cppblog.com/Geek/archive/2010/04/26/113615.html #include <iostream> #include <cstring> #include <cstdio>…