#include "swap.h"
#include <bits/stdc++.h>
using namespace std;
vector<vector<pair<int,int>>> al;
int n,m;
vector<pair<int,int>> ew;
vector<int> ew2;
void init(int N, int M,
vector<int> U, vector<int> V, vector<int> W) {
al.assign(N+1,vector<pair<int,int>>());
ew2.assign(N+1,0);
for (int i=0; i<M; i++) {
al[U[i]].push_back({V[i],W[i]});
al[V[i]].push_back({U[i],W[i]});
ew.push_back({W[i],V[i]});
ew2[V[i]]=W[i];
}
n=N;
m=M;
sort(ew.begin(),ew.end());
}
int getMinimumFuelCapacity(int X, int Y) {
if (m<=2) return -1;
if (ew[0].second==X||ew[0].second==Y) {
if (ew[1].second==X||ew[1].second==Y) {
return max({ew[2].first,ew2[X],ew2[Y]});
}
return max({ew[1].first,ew2[X],ew2[Y]});
}
return max({ew[0].first,ew2[X],ew2[Y]});
}
