Submission #1240163

#	Time	Username	Problem	Language	Result	Execution time	Memory
1240163		MarwenElarbi	Thousands Islands (IOI22_islands)	C++17	0 / 100	18 ms	4164 KiB

islands

#include <bits/stdc++.h>
#include "islands.h"
using namespace std;
#define fi first
#define se second
#define pb push_back
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
vector<pair<int,int>> adj[1005];
bool vis[1005];
vector<int> ans;
bool dfs(int x){
    vis[x]=1;
    bool test=false;
    for(auto u:adj[x]){
        if(vis[u.fi]==1) return true;
        else if(vis[u.fi]==2) continue;
        test|=dfs(u.fi);
    }
    vis[x]=2;
    return test;
}
std::variant<bool, std::vector<int>> find_journey(
    int N, int M, std::vector<int> U, std::vector<int> V) {
    for (int i = 0; i < M; ++i)
    {
        if(i%2==0) adj[U[i]].push_back({V[i],i});
    }
    if(dfs(0)) return true;
    return false;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 5
• Subtask 3: 0 / 21
• Subtask 4: 0 / 24
• Subtask 5: 0 / 45