Loading

摘要: #include <iostream> #include <cstring> #include <algorithm> using namespace std; int n, m; int p[250010]; int fd(int x) { if (p[x] != x) p[x] = fd(p[x 阅读全文
posted @ 2024-01-04 16:48 popcoount 阅读(20) 评论(0) 推荐(0) 编辑