#include "islands.h"
#include<bits/stdc++.h>
#define vi vector<int>
#define pb push_back
#define FOR(i, k, n) for(int i = k; i<n; i++)
#define f0r(i,n) for(int i = 0; i< n; i++)
#define mp make_pair
using namespace std;
std::variant<bool, std::vector<int>> find_journey(
int n, int m, std::vector<int> u, std::vector<int> v) {
if (n == 2) {
int c1 = 0;
int c2 = 0;
f0r(i, m){
if(u[i] == 0)c1++;
else c2++;
}
if(c1 >= 2 && c2 >= 1){
int a = -1;
int b = -1;
int c = -1;
f0r(i,m){
if(u[i] == 0){
if(a == -1)a = i;
else b = i;
}
else c = i;
}
return vector<int>{a,c,b,a,c,b};
}
else return false;
}
else{
int a1,a2,b1,b2,c1,c2;
f0r(i,m){
if(u[i] == 0 && v[i] == 1){
a1 = i;
}
else if(u[i] == 1 && v[i] == 0){
a2 = i;
}
else if(u[i] == 1 && v[i] == 2){
b1 = i;
}
else if(u[i] == 2 && v[i] == 1){
b2 = i;
}
else if(u[i] == 2 && v[i] == 0){
c1 = i;
}
else if(u[i] == 0 && v[i] == 2)c2 = i;
}
return vector<int>{a1, b1, c1, c2, b2, a2, c1, b1, a1, a2, b2, c2};
}
}
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