摘要:
#include<bits/stdc++.h> #define fi first #define se second #define lo (o<<1) #define ro (o<<1|1) #define mid (l+r>>1) using namespace std; typedef lon 阅读全文
摘要:
#include<bits/stdc++.h> using namespace std; typedef long long ll; vector<int >g[200005]; int du[200005]; int td[200005]; pair<int ,int >a[200005]; vo 阅读全文