#include<bits/stdc++.h>
using namespace std;
const int maxn = 1e6+5;
int N,deg[maxn];
struct dsu{
bool check=true;
int cnt,par[maxn],sz[maxn],dd[maxn];
dsu(){};
void init(){
cnt=N;check=true;
for(int i=0;i<N;i++) par[i]=i,sz[i]=1;
}
int findpar(int u){
if(u!=par[u]) return par[u]=findpar(par[u]);
return u;
}
void unions(int u,int v){
dd[u]++,dd[v]++;
if(dd[u]>=3 || dd[v]>=3) check=false,cnt=0;
u=findpar(u);v=findpar(v);
if(u==v){
if(!check) cnt=0;
else cnt=sz[u];
check=false;
return;
}
if(sz[u]<sz[v]) swap(u,v);
sz[u]+=sz[v];par[v]=u;
}
};
int mx=0;
vector<pair<int,int>> e;
vector<int> V;
dsu D[5],S;
void Init(int N_) {
N = N_;
S.init();
}
void Link(int A, int B) {
deg[A]++;deg[B]++;
mx=max({mx,deg[A],deg[B]});
e.push_back({A,B});
S.unions(A,B);
if(mx==3){
if(V.empty()){
int x=A;
if(deg[x]!=3) x=B;
for(auto [u,v]:e) if(u==x || v==x) V.push_back(u^v^x);
V.push_back(x);
for(int i=0;i<4;i++){
D[i].init();
for(auto [u,v]:e) if(u!=V[i] && v!=V[i]) D[i].unions(u,v);
}
}
else{
for(int i=0;i<4;i++){
if(A==V[i] || B==V[i]) continue;
D[i].unions(A,B);
}
}
}
}
int CountCritical() {
if(mx<=2) return S.cnt;
else if(mx>3) return 0;
int total=0;
for(int i=0;i<4;i++){
total+=D[i].check;
//if(D[i].check) cout << '*' << V[i] << '\n';
}
return total;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
16728 KB |
Output is correct |
2 |
Incorrect |
4 ms |
33372 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
98 ms |
34220 KB |
Output is correct |
2 |
Incorrect |
189 ms |
82100 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
16728 KB |
Output is correct |
2 |
Incorrect |
4 ms |
33372 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
16728 KB |
Output is correct |
2 |
Incorrect |
4 ms |
33372 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
16728 KB |
Output is correct |
2 |
Incorrect |
4 ms |
33372 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |