mirror of
https://git.sb/baoshuo/OI-codes.git
synced 2024-11-30 17:36:27 +00:00
113 lines
3.0 KiB (Stored with Git LFS)
C++
113 lines
3.0 KiB (Stored with Git LFS)
C++
#include<bits/stdc++.h>
|
|
using namespace std;
|
|
namespace IO{
|
|
template<typename T>inline bool read(T &x){
|
|
x=0;
|
|
char ch=getchar();
|
|
bool flag=0,ret=0;
|
|
while(ch<'0'||ch>'9') flag=flag||(ch=='-'),ch=getchar();
|
|
while(ch>='0'&&ch<='9') x=x*10+ch-'0',ch=getchar(),ret=1;
|
|
x=flag?-x:x;
|
|
return ret;
|
|
}
|
|
template<typename T,typename ...Args>inline bool read(T& a,Args& ...args){
|
|
return read(a)&&read(args...);
|
|
}
|
|
template<typename T>void prt(T x){
|
|
if(x>9) prt(x/10);
|
|
putchar(x%10+'0');
|
|
}
|
|
template<typename T>inline void put(T x){
|
|
if(x<0) putchar('-'),x=-x;
|
|
prt(x);
|
|
}
|
|
template<typename T>inline void put(char ch,T x){
|
|
if(x<0) putchar('-'),x=-x;
|
|
prt(x);
|
|
putchar(ch);
|
|
}
|
|
template<typename T,typename ...Args>inline void put(T a,Args ...args){
|
|
put(a);
|
|
put(args...);
|
|
}
|
|
template<typename T,typename ...Args>inline void put(const char ch,T a,Args ...args){
|
|
put(ch,a);
|
|
put(ch,args...);
|
|
}
|
|
inline void putstr(string s){
|
|
for(int i=0,sz=s.length();i<sz;i++) putchar(s[i]);
|
|
}
|
|
}
|
|
using namespace IO;
|
|
#define N 200005
|
|
#define lc(x) (x<<1)
|
|
#define rc(x) (x<<1|1)
|
|
int n,m,k,tp,fa[N],dep[N],siz[N];
|
|
struct edge{
|
|
int u,v;
|
|
}e[N<<1];
|
|
struct operation{
|
|
int x,y,siz;
|
|
bool val;
|
|
}op[N<<3];
|
|
bool ans[N];
|
|
vector<int> edge[N<<1],p[N<<2];
|
|
inline void update(int x,int l,int r,int ul,int ur,int w){
|
|
if(ul>ur) return;
|
|
if(ul<=l&&ur>=r) return p[x].emplace_back(w),void();
|
|
int mid=l+r>>1;
|
|
if(ul<=mid) update(lc(x),l,mid,ul,ur,w);
|
|
if(ur>mid) update(rc(x),mid+1,r,ul,ur,w);
|
|
}
|
|
inline int getf(int x){
|
|
while(x!=fa[x]) x=fa[x];
|
|
return x;
|
|
}
|
|
inline void merge(int x,int y){
|
|
// x=getf(x),y=getf(y);
|
|
if(dep[x]>dep[y]) swap(x,y);
|
|
fa[x]=y;
|
|
op[++tp]=(operation){x,y,siz[x],dep[x]==dep[y]};
|
|
siz[y]+=siz[x];
|
|
if(dep[x]==dep[y]) dep[y]++;
|
|
}
|
|
inline void pop(){
|
|
dep[op[tp].y]-=op[tp].val;
|
|
siz[op[tp].y]-=op[tp].siz;
|
|
fa[op[tp].x]=op[tp].x;
|
|
tp--;
|
|
}
|
|
void solve(int x,int l,int r,int flag){
|
|
int lst=tp;
|
|
for(auto now:p[x]){
|
|
int a=getf(e[now].u),b=getf(e[now].v);
|
|
if(a==b) continue;
|
|
merge(a,b);
|
|
if(siz[a]==n||siz[b]==n) flag=1;
|
|
}
|
|
if(l==r) ans[l]=flag;
|
|
else{
|
|
int mid=l+r>>1;
|
|
solve(lc(x),l,mid,flag),solve(rc(x),mid+1,r,flag);
|
|
}
|
|
while(tp>lst) pop();
|
|
}
|
|
int main(){
|
|
read(n,m);
|
|
for(int i=1;i<=m;i++) read(e[i].u,e[i].v),edge[i].emplace_back(0);
|
|
read(k);
|
|
for(int i=1,x,y;i<=k;i++){
|
|
read(x);
|
|
while(x--) read(y),edge[y].emplace_back(i);
|
|
}
|
|
for(int i=1;i<=m;i++) edge[i].emplace_back(k+1);
|
|
for(int i=1;i<=m;i++)
|
|
for(int j=1;j<edge[i].size();j++)
|
|
if(edge[i][j-1]+1<=edge[i][j]-1)
|
|
update(1,1,k,edge[i][j-1]+1,edge[i][j]-1,i);
|
|
for(int i=1;i<=n;i++) siz[i]=dep[i]=1,fa[i]=i;
|
|
solve(1,1,k,0);
|
|
for(int i=1;i<=k;i++) putstr(ans[i]?"Connected\n":"Disconnected\n");
|
|
return 0;
|
|
}
|