Coldfresh的博客

题目链接题目大意就是在一个有向无环图上，具体我也说不清楚，看题目链接。目的学习支配树，支配树分三种，一个是树上，二是有向无环图，三是一般有向图，这里是针对的是有向无环图是的支配树的构造。代码：#include<stdio.h>#include<iostream>#include<cstring>#include<algorithm>#i...

Time Limit: 5000/5000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Problem DescriptionCountry A and B are at war. Country A needs to organize transport teams to deliver supplies to...