제출 #709990

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
709990	2023-03-15 02:29:24	GrandTiger1729	Jail (JOI22_jail)	C++17	5 / 100	5035 ms	32140 KiB

jail

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#include <iostream>
#include <vector>
#include <functional>
using namespace std;
int main(){
    cin.tie(0)->sync_with_stdio(0);
    int t; cin >> t;
    while (t--){
        int n; cin >> n;
        vector<vector<int>> g(n);
        for (int i = 0; i < n - 1; i++){
            int u, v; cin >> u >> v;
            u--, v--;
            g[u].push_back(v);
            g[v].push_back(u);
        }
        vector<bool> vis(n);
        vector<int> dep(n);
        vector<vector<int>> up(n, vector<int>(__lg(n) + 1));
        function<void(int)> dfs = [&](int u){
            vis[u] = 1;
            for (auto &v: g[u]){
                if (vis[v]) continue;
                up[v][0] = u;
                dep[v] = dep[u] + 1;
                dfs(v);
            }
            vis[u] = 0;
        };
 
 
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