Submission #1081293

#	Time	Username	Problem	Language	Result	Execution time	Memory
1081293		ArthuroWich	가장 긴 여행 (IOI23_longesttrip)	C++17	0 / 100	3091 ms	5712 KiB

longesttrip

#include "longesttrip.h"
#include<bits/stdc++.h>
using namespace std;
int ans = 0;
vector<int> ord;
int vis[200005];
vector<int> adj[200005];
void dfs(int i, int d, vector<int> proc) {
    if (vis[i]) {
        return;
    }
    vis[i] = 1;
    proc.push_back(i);
    if (d > ans) {
        d = ans;
        ord = proc;
    }
    for (int j : adj[i]) {
        dfs(j, d+1, proc);
    }
    proc.pop_back();
    vis[i] = 0;
}
vector<int> longest_trip(int n, int d) {
    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);
            }
        }
    }
    ans = 0;
    ord.clear();
    for (int i = 0; i < n; i++) {
        dfs(i, 0, {});
    }
    return ord;
}

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