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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#758787 | #9525. Welcome to Join the Online Meeting! | W_Trace2# | WA | 2ms | 11804kb | C++14 | 2.0kb | 2024-11-17 19:45:22 | 2024-11-17 19:45:23 |
Judging History
answer
#include<bits/stdc++.h>
#define ll long long
using namespace std;
inline int read(){
int a=0,b=1;char c=getchar();
for(;c<'0'||c>'9';c=getchar())if(c=='-')b=-1;
for(;c>='0'&&c<='9';c=getchar())a=a*10+c-'0';
return a*b;
}
struct edge
{
int next,to;
}e[1000001];
int head[1000001],tot,ind[200001];
inline void add(int i,int j)
{
// cout<<i<<' '<<j<<endl;
ind[j]++;
e[++tot].next=head[i];
e[tot].to=j;
head[i]=tot;
}
int n,m,k,is_busy[200001];
vector<int> point;
vector<int> ans[200001];
int cnt,vis[200001];
void bfs(int st)
{
queue<int> q;
vis[st]=1;
q.push(st);
while(!q.empty())
{
int x=q.front();
q.pop();
point.push_back(x);
for(int i=head[x];i!=0;i=e[i].next)
{
int u=e[i].to;
if(vis[u])continue;
vis[u]=1;
ans[cnt].push_back(u);
q.push(u);
}
cnt++;
}
}
int main()
{
n=read(),m=read(),k=read();
for(int i=1;i<=k;i++)
{
is_busy[read()]=1;
}
for(int i=1;i<=m;i++)
{
int x=read(),y=read();
if(is_busy[y]==1)
{
if(is_busy[x]==0)
add(x,y);
}
else
if(is_busy[x]==1)
add(y,x);
else
{
add(y,x);
add(x,y);
}
}
int st=0;
for(int i=1;i<=n;i++)
{
if(is_busy[i]==0)
{
st=i;
break;
}
}
bfs(st);
bool flag=0;
for(int i=1;i<=n;i++)
{
if(!vis[i])flag=1;
}
if(flag==1)
{
cout<<"No"<<'\n';
return 0;
}
cout<<"Yes\n";
cout<<point.size()<<'\n';
for(int i=0;i<point.size();i++)
{
if(ans[i].size()==0)continue;
cout<<point[i]<<' '<<ans[i].size()<<' ';
for(int j=0;j<ans[i].size();j++)
{
cout<<ans[i][j]<<' ';
}
cout<<'\n';
}
return 0;
}
Details
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Test #1:
score: 0
Wrong Answer
time: 2ms
memory: 11804kb
input:
4 5 2 3 4 1 2 1 3 2 3 3 4 2 4
output:
Yes 4 1 2 3 2 2 1 4
result:
wrong output format Unexpected end of file - int32 expected