Submission #1007056

#	Time	Username	Problem	Language	Result	Execution time	Memory
1007056		3as8	Longest Trip (IOI23_longesttrip)	C++17	0 / 100	1 ms	344 KiB

longesttrip

#include "longesttrip.h"

#include<bits/stdc++.h>

#define ll long long
using namespace std;

bool con[300][300];
bool vis[300];
bool bkVis[300];

ll n;
ll l = 0;
void dfs(ll startIndex, vector<int>& curr) {


    vis[startIndex] = true;
    curr.push_back(startIndex);

    bool in = false;
    for(int i = 0; i < n; i++) {
        if(con[startIndex][i] && !vis[i]) {
            dfs(i, curr);
            in = true;
        }
    }

    if(!in) l = startIndex;
}


std::vector<int> longest_trip(int N, int D) {

    n = N;
    for(int i = 0; i < n; i++) {
        for(int j = i + 1; j < n; j++) {

            con[i][j] = con[j][i] = are_connected({i}, {j});
        }
    }

    ll mx = LLONG_MIN;
    vector<int> ans;

    for(int i = 0; i < n; i++) {
        if(vis[i]) continue;
        for(int j = 0; j < n; j++) bkVis[j] = vis[j];


        vector<int> curr;
        l = i;
        dfs(i, curr);

        for(int j = 0; j < n; j++) vis[j] = bkVis[j];

        vector<int> curr2;

        dfs(l, curr2);

        if(curr2.size() > ans.size()) {
            ans = curr;
        }
    }

    return ans;
}

Compilation message (stderr)

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:42:8: warning: unused variable 'mx' [-Wunused-variable]
   42 |     ll mx = LLONG_MIN;
      |        ^~

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