#include "swap.h"
#include <bits/stdc++.h>
using namespace std;
int maxx,minn,maxw;
int n,m,x,y;
vector<int> v[100001],w[100001],num[100001];
pair<int,int> p[100001];
bool sec=1;
struct edge
{
int x,d;
edge(){}
edge(int _x,int _d)
{
x=_x;
d=_d;
}
bool operator<(const edge&e)const
{
return e.d<d;
}
};
void init(int N, int M,std::vector<int> U, std::vector<int> V, std::vector<int> W)
{
minn=N;
n=N;
m=M;
for(int i=0;i<m;i++)
{
if(U[i]!=0)sec=0;
maxw=max(maxw,W[i]);
v[U[i]].push_back(V[i]);
v[V[i]].push_back(U[i]);
w[U[i]].push_back(W[i]);
w[V[i]].push_back(W[i]);
num[U[i]].push_back(i);
num[V[i]].push_back(i);
maxx=max(maxx,(int)v[U[i]].size());
maxx=max(maxx,(int)v[V[i]].size());
p[i]={W[i],V[i]};
}
sort(p,p+m);
for(int i=0;i<n;i++)
{
minn=min(minn,(int)v[i].size());
}
}
int getMinimumFuelCapacity(int X, int Y)
{
x=X;
y=Y;
if(maxx<=2)
{
if(minn==1)return -1;
return maxw;
}
if(sec)
{
if(x==0||y==0)
{
int ans=p[0].first;
if(x>y)swap(x,y);
if(p[0].second==y)ans=p[1].first;
ans=max(ans,w[y][0]);
return ans;
}
int ans=p[0].first;
if(p[0].second==x||p[0].second==y)ans=p[1].first;
if(p[1].second==x||p[1].second==y)ans=p[2].first;
ans=max(ans,w[x][0]);
ans=max(ans,w[y][0]);
return ans;
}
}
/*
5 4
0 1 1
0 2 2
0 3 3
0 4 4
3
1 2
2 3
3 4
*/
