#include "islands.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
variant<bool, vector<int>> find_journey(int n, int m, vector<int> u, vector<int> v) {
vector<ll> g[n];
for(ll i=0; i<m; i++){
g[u[i]].push_back(v[i]);
}
if(g[0].size()==0) return false;
else if(g[0].size()>=2) return true;
else if(g[g[0][0]].size()==1) return false;
else return true;
}
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