摘要: HK2016训练赛 C by 🐱 想想$k 1$且$k include include using namespace std; const int MOD = 1e9 + 7; const int N = 30000+10; int n,m,par[N],sz[N]; struct Edge{ 阅读全文
posted @ 2018-09-27 17:19 RUSH_D_CAT 阅读(175) 评论(0) 推荐(0) 编辑