题目链接:http://poj.org/problem?id=2449 "Good man never makes girls wait or breaks an appointment!" said the mandarin duck father. Softly touching his little ducks' head, he told them a story. "Prince Remmarguts lives in his kingdom UDF – Unite…

题目链接 Description "Good man never makes girls wait or breaks an appointment!" said the mandarin duck father. Softly touching his little ducks' head, he told them a story. "Prince Remmarguts lives in his kingdom UDF – United Delta of Freedom.…

题意就是要求第K短的路的长度(S->T). 对于K短路,朴素想法是bfs,使用优先队列从源点s进行bfs,当第K次遍历到T的时候,就是K短路的长度. 但是这种方法效率太低,会扩展出很多状态,所以考虑用启发式搜索A*算法. 估价函数 = 当前值 + 当前位置到终点的距离,即F(p) = G(p) + H(p). G(p): 当前从S到p所走的路径距离 H(p): 当前点p到终点T的最短路径距离   ---可以先将整个图边方向取反然后以T为源点求个最短路,用SPFA提速 F(p): 从S按照当前路径…

http://poj.org/problem?id=2449 Remmarguts' Date Time Limit: 4000MS   Memory Limit: 65536K Total Submissions: 18168   Accepted: 4984 Description "Good man never makes girls wait or breaks an appointment!" said the mandarin duck father. Softly tou…

Remmarguts' Date http://poj.org/problem?id=2449 Time Limit: 4000MS   Memory Limit: 65536K Total Submissions: 30772   Accepted: 8397 Description "Good man never makes girls wait or breaks an appointment!" said the mandarin duck father. Softly tou…

题目链接:http://poj.org/problem?id=2449 Time Limit: 4000MS Memory Limit: 65536K Description "Good man never makes girls wait or breaks an appointment!" said the mandarin duck father. Softly touching his little ducks' head, he told them a story. &quo…

Remmarguts' Date Time Limit: 4000MS   Memory Limit: 65536K Total Submissions: 25216   Accepted: 6882 Description "Good man never makes girls wait or breaks an appointment!" said the mandarin duck father. Softly touching his little ducks' head, h…

Remmarguts' Date Time Limit: 4000MS   Memory Limit: 65536K Total Submissions: 33606   Accepted: 9116 Description "Good man never makes girls wait or breaks an appointment!" said the mandarin duck father. Softly touching his little ducks' head, h…

版权声明:本文为博主原创文章.未经博主同意不得转载. https://blog.csdn.net/u013081425/article/details/26729375 http://poj.org/problem?id=2449 大致题意:给出一个有向图,求从起点到终点的第K短路. K短路与A*算法具体解释  学长的博客.. . 算法过程 #include <stdio.h> #include <iostream> #include <algorithm> #incl…

  Time Limit: 4000MS   Memory Limit: 65536K Total Submissions:32863   Accepted: 8953 Description "Good man never makes girls wait or breaks an appointment!" said the mandarin duck father. Softly touching his little ducks' head, he told them a st…