Submission #1358281

#	Time	Username	Problem	Language	Result	Execution time	Memory
1358281		Zone_zonee	Longest Trip (IOI23_longesttrip)	C++20	40 / 100	268 ms	788 KiB

longesttrip

#include "longesttrip.h"
#include <bits/stdc++.h>
using namespace std;

vector<int> adj[300];
vector<int> res, cur;
bool vis[300];
void dfs(int u){
    cur.push_back(u);
    vis[u] = 1;
    if(res.size() < cur.size()) res = cur;
    for(int v : adj[u]){
        if(vis[v]) continue;
        dfs(v);
    }
    cur.pop_back();
}
std::vector<int> longest_trip(int N, int D)
{
    res.clear();
    for(int i = 0; i < N; ++i) adj[i].clear();
    for(int i = 0; i < N; ++i){
        for(int j = i+1; j < N; ++j){
            if(are_connected({i}, {j})){
                adj[i].push_back(j);
                adj[j].push_back(i);
            }
        }
    }
    for(int i = 0; i < N; ++i){
        memset(vis, 0, sizeof vis);
        cur.clear();
        vis[i] = 1;
        dfs(i);
    }
    return res;
}

• Subtask 0: 0 / 0
• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 25 / 25
• Subtask 4: 0 / 60