摘要: 例题:https://ac.nowcoder.com/acm/contest/117503/B 点击查看代码 #include <bits/stdc++.h> using namespace std; const int N = 2e6 + 10; vector<int> v[N]; int dep 阅读全文
posted @ 2025-10-11 16:20 ha000star 阅读(7) 评论(0) 推荐(0)