当前你的浏览器版本过低,网站已在兼容模式下运行,兼容模式仅提供最小功能支持,网站样式可能显示不正常。
请尽快升级浏览器以体验网站在线编辑、在线运行等功能。

建议使用的浏览器:

谷歌Chrome 火狐Firefox Opera浏览器 微软Edge浏览器 QQ浏览器 360浏览器 傲游浏览器

5293:Tree chain problem

题目描述
Coco has a tree, whose vertices are conveniently labeled by 1,2,…,n.
There are m chain on the tree, Each chain has a certain weight. Coco would like to pick out some chains any two of which do not share common vertices.
Find out the maximum sum of the weight Coco can pick
输入解释
The input consists of several test cases. The first line of input gives the number of test cases T (T<=10).
For each tests:
First line two positive integers n, m.(1<=n,m<=100000)
The following (n - 1) lines contain 2 integers ai bi denoting an edge between vertices ai and bi (1≤ai,bi≤n),
Next m lines each three numbers u, v and val(1≤u,v≤n,0<val<1000), represent the two end points and the weight of a tree chain.
输出解释
For each tests:
A single integer, the maximum number of paths.
输入样例
1
7 3
1 2
1 3
2 4
2 5
3 6
3 7
2 3 4
4 5 3
6 7 3
输出样例
6

提示
 Stack expansion program: #pragma comment(linker, "/STACK:1024000000,1024000000") 
来自杭电HDUOJ的附加信息
Author FZUACM
Recommend

该题目是Virtual Judge题目,来自 杭电HDUOJ

源链接: HDU-5293

最后修改于 2020-10-25T23:21:25+00:00 由爬虫自动更新

共提交 0

通过率 --%
时间上限 内存上限
6000/3000MS(Java/Others) 65536/65536K(Java/Others)