#include<bits/stdc++.h>
using namespace std;
const int N=1005;
int tme,m;
vector<int> lab;
vector<int> nei[N];
map<int,int> mp;
void dfs(int x,int p,int lv){
++tme;
if(lv){
lab[x-1]=tme;
mp[tme];
}
for(int i=0;i<int(nei[x].size());i++){
int to=nei[x][i];
if(to!=p) dfs(to,x,lv^1);
}
++tme;
if(!lv){
lab[x-1]=tme;
mp[tme];
}
}
vector<int> label(int n,int k,vector<int> u,vector<int> v){
memset(vl,0,sizeof(vl));
mp.clear();
lab.clear();
lab.resize(n);
tme=0;m=0;
for(int i=1;i<=n;i++) nei[i].clear();
for(int i=0;i<n-1;i++){
u[i]++;v[i]++;
nei[u[i]].push_back(v[i]);
nei[v[i]].push_back(u[i]);
}
dfs(1,-1,0);
for(map<int,int>::iterator it=mp.begin();it!=mp.end();it++) it->second=++m;
for(int i=0;i<n;i++) lab[i]=mp[lab[i]];
return lab;
}
int find_next_station(int s,int t,vector<int> c){
sort(c.begin(),c.end());
if(s<c[0]){
if(t>s) return *lower_bound(c.begin(),c.end(),s);
else return c[int(c.size())-1];
}else{
if(t<s) return *(lower_bound(c.begin(),c.end(),s+1)-1);
else return c[0];
}
}
Compilation message
stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:28:9: error: 'vl' was not declared in this scope; did you mean 'v'?
28 | memset(vl,0,sizeof(vl));
| ^~
| v
