摘要:
``` #include #include #include #include using namespace std; typedef long long ll; const int N=1e5,M=90000; const ll INF=1e15; int n,m,e; struct node{ int l,r,w; bool operator>1; build(u>1; if(k=l&&tr 阅读全文
摘要:
dfs 阅读全文
摘要:
参考博客 https://ksmeow.moe/meal csps219 sol/ 阅读全文