#include "islands.h"
#include<bits/stdc++.h>
#include <variant>
#include <vector>
using namespace std;
#define fi first
#define se second
#define pb push_back
#define ll long long
#define ld long double
const int N=1e5+50;
vector<int>E[N];
std::variant<bool, std::vector<int>> find_journey(int n, int m, std::vector<int> U, std::vector<int> V) {
int deg[n+10]={0};
vector<int>nesto[n+10];
for(int i=0;i<m;i++){
deg[U[i]]++;
nesto[U[i]].pb(i);
}
if(deg[0]<=1||deg[1]<=0) return false;
vector<int>res={nesto[0][0],nesto[1][0],nesto[0][1],nesto[0][0],nesto[1][0],nesto[0][1]};
return res;
}
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