#include <iostream>
#include<bits/stdc++.h>
using namespace std;
int n,m,q,k;
vector<int> a[100004];
int used[100004];
int br;
void read()
{
memset(used,-1,sizeof(used));
cin>>n>>m>>q>>k;
br=n-q;
for(int i=1; i<=q; i++)
{
int x;
cin>>x;
used[x]=0;
}
for(int i=1; i<=m; i++)
{
int x,y;
cin>>x>>y;
a[x].push_back(y);
a[y].push_back(x);
}
}
void dfs(int x, int p)
{
if(p==0) return;
else
{
p-=1;
int sz=a[x].size();
for(int i=0; i<sz; i++)
{
int nb=a[x][i];
if(used[nb]==-1)
{
br--;
used[nb]=day;
dfs(nb,p);
}
}
}
}
void solve()
{
queue<int>q1;
int day=1;
while(br>0)
{
for(int i=1; i<=n; i++)
{
if(used[i]>-1)
{
q1.push(i);
}
}
while(!q1.empty())
{
int x=q1.front();
q1.pop();
dfs(x,day*k);
}
day++;
}
for(int i=1; i<=n; i++)
{
cout<<used[i]<<" ";
}
cout<<endl;
}
int main()
{
read();
solve();
return 0;
}
Compilation message
birmingham.cpp: In function 'void dfs(int, int)':
birmingham.cpp:41:26: error: 'day' was not declared in this scope
used[nb]=day;
^~~
