Submission #1046163

#	Time	Username	Problem	Language	Result	Execution time	Memory
1046163		ezzzay	Longest Trip (IOI23_longesttrip)	C++17	15 / 100	6 ms	600 KiB

longesttrip

#include "longesttrip.h"
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
bool vis[500];
vector<int>v[500];
vector<int>ans;
void dfs(int a){
    vis[a]=1;
    ans.pb(a);
    for(auto b:v[a]){
        if(vis[b]==0){
            dfs(b);
        }
    }
}
std::vector<int> longest_trip(int N, int D)
{
    ans.clear();
    for(int i=0;i<N;i++){
        vis[i]=0;
        v[i].clear();
    }
    std::deque<int> q={0};
    if(are_connected({0},{1})){
        q.push_back(1);
        if(are_connected({2},{0})){
            q.push_front(2);
        }
        else{
            q.push_back(2);
        }
    }
    else{
        q.push_back(2);
        q.push_back(1);
    }
    for(int i=3;i<N;i++){
        if(are_connected({i},{q.back()})){
            q.push_back(i);
        }
        else{
            q.push_front(i);
        }
    }
    while(!q.empty()){
        ans.pb(q.back());
        q.pop_back();
    }
    return ans;
}

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