Submission #1076142

#	Time	Username	Problem	Language	Result	Execution time	Memory
1076142		MarwenElarbi	Longest Trip (IOI23_longesttrip)	C++17	Compilation error	0 ms	0 KiB

longesttrip

#include <bits/stdc++.h>
#include "longesttrip.h"
using namespace std;
#define pb push_back
#define fi first
#define se second
const int nax = 2e5+5;
const int MOD = 1e9+7;

bool are_connected(std::vector<int> A, std::vector<int> B);

vector<int> adj[256];
bool vis[256];
vector<int> components[256];
void dfs(int x,int p){
    components[p].pb(x);
    vis[x]=true;
    for(auto u:adj[x]){
        if(vis[u]) continue;
        dfs(u,p);
    }return;
}
std::vector<int> longest_trip(int N, int D)
{
    for (int i = 0; i < N; ++i)
    {
        vis[i]=0;
        adj[i].clear();
        components.clear();
    }
    for (int i = 0; i < N; ++i)
    {
        for (int j = i+1; j < N; ++j)
        {
            if(are_connected({i},{j})){
                adj[i].pb(j);
                adj[j].pb(i);
            }
        }
    }
    pair<int,int> big={-1,-1};
    for (int i = 0; i < N; ++i)
    {
        if(vis[i]) continue;
        dfs(i,i);
        if(big.fi<(int)components[i].size()){
            big={(int)components[i].size(),i};
        }
    }
    vector<int> ans;
    for(auto u:components[big.se]){
        ans.pb(u);
    }
    return ans;
}

Compilation message (stderr)

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:29:20: error: request for member 'clear' in 'components', which is of non-class type 'std::vector<int> [256]'
   29 |         components.clear();
      |                    ^~~~~