#include "swap.h"
#include <bits/stdc++.h>
using namespace std;
long long i,j,s,t;
long long link[261523],size[234567],c[234567],a[234567],l=12345678,r,tt,k,y,z,n,m,x;
pair<long long,long long>p[234567];
void init(int N, int M, vector <int> U, vector <int> V, vector <int> W) {
n = N;
m = M;
for (i = 0; i <m; i ++){
p[i].first=W[i];
p[i].second=U[i]*l+V[i];
}
sort (p,p+m);
}
long long find(long long x) {
while (x != link[x])
x = link[x];
return x;
}
bool same(long long x, long long y) {
return find(x) == find(y);
}
void unite(long long x, long long y) {
x = find(x);
y = find(y);
if (size[x] < size[y])
swap(x,y);
size[x] += size[y];
if (c[x]+c[y]>0)
c[x]=1;
link[y] = x;
}
int getMinimumFuelCapacity(int u, int v) {
for (i = 1; i<=n; i ++){
link[i]=i;
size[i]=1;
c[i]=0;
a[i]=0;
}
for (i = 0; i <m; i ++){
x=p[i].second/l;
y=p[i].second%l;
a[x]++;
a[y]++;
if (find(x)==find(y)||a[x]>2||a[y]>2){
c[find(x)]=1;
}
unite(x,y);
if (find(u)==find(v)&&c[find(u)]==1){
return w[i];
}
}
return -1;
}
Compilation message
swap.cpp: In function 'int getMinimumFuelCapacity(int, int)':
swap.cpp:54:20: error: 'w' was not declared in this scope
54 | return w[i];
| ^
