Many years ago , in Teddy’s hometown there was a man who was called “Bone Collector”. This man like to collect varies of bones , such as dog’s , cow’s , also he went to the grave …The bone collector had a big bag with a volume of V ,and along his trip o
题目链接：51Nod 2602 树的直径 题目大意： 题解： 两遍\(dfs\)，第一遍从根开始找到最深的结点，第二遍从最深的结点开始得到树的直径。 #include <cstring> #include <iostream> using namespace std; struct Edge { int v, next; } edge[200010]; int head[100010], cnt; int n, di
