2022牛客五一集训派对day3-F：Rikka with Line Graph题解
链接：https://ac.nowcoder.com/acm/contest/33551/F来源：牛客网时间限制：C/C++ 10秒，其他语言20秒空间限制：C/C++ 262144K，其他语言524288K64bit IO Format: %lld题目描述Line Graph L(G) can be considered as an operator on an undirected graph G just like Complementary Graph and Dual Graph.R
